Combined calculator ruler, and desk tray
United States Patent D285094

Li, Robert S. K. (Central, HK)
Application Number:
Publication Date:
Filing Date:
RJP Electronics Limited (Central, HK)
Primary Class:
Other Classes:
D10/2, D10/71, D18/7, D19/75, D19/77
Field of Search:
D18/2, D18/6-8, D18/11, D18/12, D10/71, D10/62, D10/2, D3/30.1, D19/75, D19/77, 206/214, 364/706-710
View Patent Images:
US Patent References:
D279381Calculator ruler or similar articleJune, 1985LeungD18/2
D245109Desk top calculator with scaleJuly, 1977YoshiokaD18/7
D157534N/AFebruary, 1950PriceD3/30.1

Foreign References:
FR634696February, 1928206/214
FR720123February, 1932206/214
FR1147669November, 1957206/214
Primary Examiner:
Zarfas, Louis S.
Attorney, Agent or Firm:
Ladas & Parry
1. The ornamental design for a combined calculator, ruler and desk tray,substantially as shown and described.


FIG. 1 is a top plan view of a combined calculator, ruler, and desk tray showing my new design in closed condition;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front elevational view;

FIG. 4 is a left end elevational view;

FIG. 5 is a right end elevational view; and

FIG. 6 is a perspective view of the design in open condition.