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7427013 |
Calculator apparatus
A calculator is provided that includes an input pad that includes a sales tax button and a currency pad, which includes a change due button and a number of currency keys. The currency keys can be...
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7337946 |
Device for resolving interpersonal relationship issues
A device for resolving interpersonal relationship issues comprising: (a) a plurality of text sheets comprised of flexible, transparent material; (b) a rigid front cover; and (c) a rigid back cover;...
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7124933 |
Agricultural converter calculator
An electronic calculator apparatus converts between bushel measures of a selected crop product and weight measures of the selected crop product. The apparatus comprises a microprocessor and a...
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6983887 |
Promotional apparatus for calculating characteristics of subjects using two input variables
An apparatus for determining a characteristic, such as body mass index number, for a person includes a housing having a panel with an edge portion, an intermediate portion, and a window formed in...
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6974075 |
Method of controlling a person's weight
A slimming club is simulated so a person can visit a virtual slimming club via the Internet and can have his or her weight-related data reviewed automatically by a central computer system and will...
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6840439 |
Fraction exploration device
A fraction exploration device for teaching various mathematical principles related to fractions, comprising a base sheet having printed indicia thereon, a ruler attached pivotally to the base...
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6820800 |
Electronic calculator
An electronic calculator having means for enabling a user to input a calculation, characterized in that the calculator has a mode of operation in which the user is required to input additionally at...
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6798649 |
Mobile computer with foldable keyboard
A digital processing device including a base, a display assembly, a hinge assembly, and a foldable keyboard is described. The hinge assembly enables the back of the display assembly to be rotated...
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6772942 |
Arithmetic circuit to increase the speed of a modular multiplication for a public key system for encryption
A circuit and a method for solving the Montgomery multiplier bottleneck problem encountered during a memory access using two ports or single port general-purpose memories is described. A first and...
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6656052 |
Progressive gaming method
A method of increasing gaming activity and entertainment value of games with progressive jackpots including posting or publishing information items sufficient to determine a current expected...
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6655578 |
Instrument for computing proportions of an original recipe
A hand-held instrument for calculating the measurements necessary to prepare any number of servings or serving sizes from a printed food recipe which utilizes two concentric rotating wheels, the...
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6561415 |
Calorie management system
A bracelet for counting calories is formed by a plurality of counting beads each having an aperture there through. A monofilament line is threaded in a looping manner through the aperture of each...
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6520406 |
Room security system
A room security system for providing an occupant of a room information as to the number of times a person has entered and exited the room. The security system displays a visual numerical count. The...
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6508396 |
Table top display devices
A desk top calculator device is supported in a window frame 13 of a casing which includes the window frame and a housing 14. In an “open” configuration shown in the Figure, a keyboard 11 ...
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6450401 |
Writing board with electronic calculator
A writing board with an electronic calculator and a writing board to which an electronic calculator is installable. The writing board including a case member provided with an opening in a top...
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6206281 |
Calculator with automatic slow motion deployment
A decorative housing for an object such as calculator has a unique appearance that enhances its functionality. To reduce the desk area of the calculator when not in use, the calculator shrinks in...
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6011544 |
Computer system which inhibits input operation from keyboard when necessary
When coordinate data are entered from a tablet with a pen, the pen is operated on the tablet while depressing a predetermined key of a keyboard. A signal generated by the depression of the...
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5530234 |
Hand held calculator having a retractable cover
A portable, hand held, electronic calculator assembly has a retractable cover slidably mounted to a calculator. The calculator has a front with a keypad and display, and a back. The cover has an...
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5179502 |
Pocket-size electronic device
A pocket-size electronic device adapted for use as an electronic organizer which includes a casing having a coordinate input section of a tablet type, a telescopic touch pen for writing in the...
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5027307 |
Lighting application calculator
An apparatus for selecting optimum lighting fixtures for a given application first determines a room cavity ratio from entered values of the dimensions of the room. The room cavity ratio is used to...
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4272107 |
Tide time indicator
A tidal time indicator for determining tide times at various locations on a specific stretch of coastline comprises a pair of complementary charts. One of the charts is in the form of a map having...
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4263945 |
Automatic fuel dispensing control system
A new and improved automatic fuel dispensing control system intended for use in serving a fleet of vehicles or equipment and requiring no operator action. A fueling receiver mounted in the fuel...
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4110836 |
Program control and display apparatus
A number of values of a variable defining a program of operations are settable by means of three potentiometers, connected to a controlled apparatus, which control respectively the initial, final,...
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4006344 |
Mechanical binary number adding and subtracting apparatus
A mechanical apparatus for adding or subtracting binary numbers, in a visual manner, comprises a front plate with first and second rows of ball receiving apertures formed near the plate top. Balls...
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3961159 |
Light shield/support device
This invention relates to a light shield/support device for reducing glare on the lighted display window of a portable electronic calculator. The device may also be interchangeably utilized to...
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3789507 |
MACHINE ELEMENT ALIGNMENT SYSTEM
A graphical method for determining corrections required to align one machine element with another employing a plotting board-overlay combination comprising a grid, said grid comprising scale means...
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3788541 |
COMPUTATION DEVICE AND METHOD
A computation device for performing the mathematical operations of multiplication and division is disclosed. The device has a housing in which an indicator is fixedly located. There is a first...
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3757513 |
CURSOR RING FOR A WRIST WATCH
A wrist watch having a cursor ring rotatably mounted thereon, said cursor being formed with a first laterally projecting portion having a cursor line thereon for setting scales on said watch, and a...
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3706877 |
DENSITOMETER HAVING AN ANALOG COMPUTER FOR CALCULATING A FRACTION OF THE TOTAL AREA UNDER A CURVE
A densitometer which provides complete electrophoresis results on a single sheet. An electrophoresis sample is scanned by a beam of light energy. The light energy transmitted through the sample is...
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3675848 |
VARIATOR
Multiple product gasoline dispensing apparatus having a variator presettable for programming a three-place unit volume price for each of the gasoline products. Three coaxial drive ratchet...
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3674201 |
NUMERICAL DATA TRANSFER DEVICE
A numerical data transfer device including an input store, a variably positionable output member and a transfer member. The device also includes means for relatively displacing the transfer member...
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3673793 |
DIRECT CHARGE-RATE INDICATOR
A device for indicating the cost of an operation having at least one charge-rate applicable thereto comprises a compound dial including fixed and movable dial surface which have inscribed thereon...
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3602995 |
RADAR PROPAGATION RAY PLOTTER
This invention is directed to the structure and use of a template for plotting a family of radar rays in the atmosphere in order to determine the zones of high probability of detection of airborne...
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3600092 |
APPARATUS FOR MEASURING DENSITY STIMULUS VALUES OF THREE PRIMARY COLORS
A recording spectrophotometer for measuring the color density of a colored surface necessary for calculating a recipe of color matching based on a colorimetric method, characterized by an...
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3532267 |
TIME BASE ANALOGUE COMPUTER WITH NAVIGATION APPLICATIONS
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3512271 |
MECHANICAL DEVICE FOR REPRESENTING MATHEMATICAL AND PHYSICAL VALUES AND RELATIONSHIPS
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3506189 |
CONTROL MAGNET ARRANGEMENT
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3504163 |
SERIAL SETUP DEVICE FOR A CALCULATING,ACCOUNTING OR SIMILAR MACHINE
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3502264 |
APPARATUS FOR DISPLAYING MOMENTS SHEARING FORCES ETC. ON BOARD SHIPS
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3499649 |
AUTOMATIC SCORING,TOTALIZING AND PRINTING APPARATUS FOR BOWLING GAME
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3498534 |
TOY COMPUTER
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3497681 |
NAVIGATIONAL COMPUTER
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3493233 |
PREPAYMENT DEVICE
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3473731 |
SPEED REGISTER
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3465328 |
INFORMATION CONTROL SYSTEM
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3442447 |
FLUID SIGNAL CODE CONVERTER
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3441207 |
APPARATUS FOR SPEED INDICATION
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3439872 |
CLASSIFYING APPARATUS
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3437268 |
MATHEMATICAL AVERAGING APPARATUS
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3432094 |
FOUR-SPECIES CALCULATING MACHINE
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