Case for an electronic calculator

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Description

FIG. 1 is a view in perspective of a case for an electronic calculator showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view of a case for a hand-held calculator showing a modified form of our new design;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side elevational view thereof, the right side being a mirror image and the front being the same as FIG. 2;

FIG. 7 is a left side elevational view of the first embodiment.

Referenced Cited
U.S. Patent Documents
D230404 February 1974 Jimbo
D243535 March 1, 1977 Ikeda
D247391 February 28, 1978 Hazama et al.
D249093 August 22, 1978 Hazama et al.
D249742 September 26, 1978 Ohie
4158230 June 12, 1979 Washizuka et al.
Patent History
Patent number: D259200
Type: Grant
Filed: Jul 12, 1978
Date of Patent: May 12, 1981
Assignee: Texas Instruments Incorporated (Dallas, TX)
Inventors: Robert A. Welch (Lubbock, TX), Shinpei Ichikawa (Lubbock, TX)
Primary Examiner: Louis S. Zarfas
Attorneys: Robert D. Marshall, Jr., Leo N. Heiting, Melvin Sharp
Application Number: 5/924,038
Classifications
Current U.S. Class: With Keyboard (D18/7)
International Classification: D1801;