Combined ruler, calculator and clock
United States Patent D286161

Wong, Chambers (Kowloon, JP)
Application Number:
Publication Date:
Filing Date:
Far East United Electronics Limited (Kowloon, HK)
Primary Class:
Other Classes:
D10/2, D10/71
Field of Search:
D10/2, D10/15, D10/71, D18/2, D18/7, 368/10, 33/125A, 33/403, 33/484, 33/485, 33/488
View Patent Images:
US Patent References:
D279381Calculator ruler or similar articleJune, 1985LeungD18/2
D271025Combined ruler and electronic calculatorOctober, 1983LiD10/71
4362393Chess clockDecember, 1982Tissot368/10
D264729Electronic calculator with timepieceJune, 1982KobayashiD18/2
D259476RulerJune, 1981FeingoldD10/71
4158229Electronic rule for precise distance measurement and distance settingJune, 1979Woo331/25A
D251252Beam compassMarch, 1979KamilaD10/71
D245109Desk top calculator with scaleJuly, 1977YoshiokaD10/71
D201300N/AJune, 1965SeelyD10/71
1334145RulerMarch, 1920EatonD10/71

Foreign References:
JP0179601November, 198233/485
Other References:
Hong Kong Enterprises-12/81, p. 38 item #635-Ruler/Pencil Box/Calculator at bottom-center.
Primary Examiner:
Holtje, Nelson C.
Attorney, Agent or Firm:
Abelman Frayne Rezac & Schwab
1. The ornamental design for a combined ruler, calculator and clock, as shownand described.


FIG. 1 is a top and left front perspective view of a combined ruler, calculator and clock showing my new design;

FIG. 2 is a bottom and right rear perspective view thereof;

FIG. 3 is a top-right perspective view thereof with the clock/calculator in a removed and inverted position.