Calculator

- Datel Electrocraft Corp.

Latest Datel Electrocraft Corp. Patents:

Description

FIG. 1 is a top, front and right side perspective view of a calculator showing my new design, with the stand in an open position;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevational view, with the stand in closed position;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a left side elevational view thereof; and,

FIG. 8 is a right side elevational view thereof.

Referenced Cited
U.S. Patent Documents
D249091 August 22, 1978 Burtis
D276536 November 27, 1984 Siefert
D294764 March 15, 1988 Fincke
D326471 May 26, 1992 Chen
Other references
  • Hong Kong Enterprise, Jul. 1988, p. 206, round calculator, GE-C123, top left. Cole-Parmer Co., p. 871, F-timer, top right center.
Patent History
Patent number: D333831
Type: Grant
Filed: Jul 1, 1991
Date of Patent: Mar 9, 1993
Assignee: Datel Electrocraft Corp. (Taipei)
Inventor: Paul Chen (Chung Ho)
Primary Examiner: Nelson C. Holtje
Assistant Examiner: Ann Hunt
Law Firm: Bacon & Thomas
Application Number: 7/724,349
Classifications
Current U.S. Class: With Keyboard (D18/7)