Calculator casing

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Description

FIG. 1 is a view in perspective of a calculator casing showing our new design;

FIG. 2 is a plan view thereof, on an enlarged scale;

FIG. 3 is a front elevational view thereof, on an enlarged scale;

FIG. 4 is a side elevational view thereof, on an enlarged scale; and

FIG. 5 is a rear elevational view thereof, on an enlarged scale.

The bottom side of the calculator casing is plain and conventional.

Referenced Cited
U.S. Patent Documents
D233347 October 1974 Beitler
D238788 February 1976 Goldsamt
Other references
  • Commodore C108 Electronic Calculator Advertisement Rec'd Ja. 1972, Calculator. Office Products, Feb. 1975, p. 64, Model 12-M Electronic Desk-top Calculator.
Patent History
Patent number: D249388
Type: Grant
Filed: Sep 2, 1976
Date of Patent: Sep 12, 1978
Assignee: Texas Instruments Incorporated (Dallas, TX)
Inventors: Eugene Joseph Sulek (Richardson, TX), William James Lawrence (Dallas, TX)
Primary Examiner: Susan J. Lucas
Attorney: Harold Levine
Application Number: 5/720,166
Classifications
Current U.S. Class: D64/11B
International Classification: D1801;