Portable calculating machine

Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

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

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a rear elevational view thereof; and

FIG. 6 is a perspective view of a second embodiment of the portable calculating machine;

FIG. 7 is a front elevational view thereof;

FIG. 8 is a top plan view thereof;

FIG. 9 is a right side elevational view thereof, the left side being a mirror image of the right side shown; and

FIG. 10 is a rear elevational view thereof.

FIG. 11 is a bottom view of the first and second embodiments of the portable calculating machine.

Referenced Cited
U.S. Patent Documents
D226858 May 1973 Liljenwall
3887791 June 1975 Kitchens
Other references
  • Merchandising Week, Jan. 6, 1975, p. 40, Calculator Item C.
Patent History
Patent number: D248595
Type: Grant
Filed: Mar 21, 1977
Date of Patent: Jul 18, 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: 5/779,728
Classifications
Current U.S. Class: D64/11B
International Classification: D1801;