Combined ruler and electronic calculator

- RJP Electronics Limited

Latest RJP Electronics Limited Patents:

Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a top plan view of a combined ruler and electronic calculator showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view of a second embodiment of my new design of FIGS. 1-5.

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a front elevational view thereof;

FIG. 9 is a left side elevational view thereof;

FIG. 10 is a right side elevational view thereof.

Referenced Cited
U.S. Patent Documents
D94464 February 1935 Bausch
D201300 June 1965 Seely
D245109 July 19, 1977 Yoshioka
D251252 March 6, 1979 Kamila
D259476 June 9, 1981 Feingold
D264821 June 8, 1982 Henkels
D269353 June 14, 1983 Yokoyama
1334145 March 1920 Eaton
4095273 June 13, 1978 Gonzales
4158229 June 12, 1979 Woo
4282571 August 4, 1981 Giovannoli
Other references
  • Hong Kong Enterprises-12/81-p. 38-Item #635-Ruler-Pencil Box-Calculator at bottom center.
Patent History
Patent number: D271025
Type: Grant
Filed: Dec 29, 1982
Date of Patent: Oct 18, 1983
Assignee: RJP Electronics Limited (Hong Kong)
Inventor: Robert S. K. Li (Central)
Primary Examiner: Nelson C. Holtje
Law Firm: Antonelli, Terry & Wands
Application Number: 6/454,486
Classifications
Current U.S. Class: Combined (1) (D18/2); Rule, Tape Or Scale (10) (D10/71); Combined (1) (D10/2); Rules (33/483)
International Classification: D1801;