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
Other references
D233347 | October 1974 | Beitler |
D238788 | February 1976 | Goldsamt |
- 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
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;
International Classification: D1801;