Electronic calculator

- Sperry Rand Corporation
Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a top plan view of an electronic calculator showing our new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a rear elevational view thereof.

Referenced Cited
U.S. Patent Documents
D227472 June 1973 Hikawa
D227472 June 1973 Yamamoto et al.
D230484 February 1974 Yamagami
D233347 October 1974 Beitler et al.
Patent History
Patent number: D242721
Type: Grant
Filed: Aug 26, 1974
Date of Patent: Dec 14, 1976
Assignee: Sperry Rand Corporation (New York, NY)
Inventors: Lewis H. Herr (Lansdale, PA), Paul W. Porter (Lawrence, MA), John S. Kovacs (East Norriton, PA)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Catherine Kemper
Attorney: Marshall M. Truex
Application Number: 5/500,408
Classifications
Current U.S. Class: D26/5C
International Classification: D1801;