Calculating machine

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Description

FIG. 1 is a perspective view of a calculating machine showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof on a reduced scale, and

FIG. 4 is a rear elevational view thereof on a reduced scale.

Referenced Cited
U.S. Patent Documents
D233347 October 1974 Beitler
Other references
  • Office Products, Jul., 1975, p. 31, calculator#L1210. Office Products, Sep., 1975, p. 112, display calculator #320.
Patent History
Patent number: D248419
Type: Grant
Filed: Mar 21, 1977
Date of Patent: Jul 4, 1978
Assignee: Litton Business Systems, Inc.
Inventors: Myron Beitler (West Orange, NJ), Stuart D. Leer (Chatham, NJ)
Primary Examiner: Susan J. Lucas
Attorney: Norman Friedman
Application Number: 5/779,727
Classifications
Current U.S. Class: D64/11B
International Classification: D1801;