Calculating machine

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Information

Patent Grant
D248419

References
Source

Patent Number
D248,419
Date Filed
Monday, March 21, 1977
47 years ago
Date Issued
Tuesday, July 4, 1978
46 years ago

Inventors
- Myron Beitler
- Stuart D. Leer
Original Assignees
- LITTON BUSINESS SYSTEMS, INC
Examiners
- Lucas; Susan J.
Agents
- Friedman; Norman

US Classifications
- D64
Field of Search
- US
- D64 11 R
- D64 11 B
- D64 11 C
- 235 1 D
- 235 145 R
- D14 40
- D14 42
- D14 45
- D14 43
- D13 40
- D13 41
International Classifications
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a calculating machine, as shown and described.

US Referenced Citations (1)

Number	Name	Date	Kind
D233347	Beitler	Oct 1974

Non-Patent Literature Citations (2)

Entry
Office Products, Jul., 1975, p. 31, calculator#L1210.
Office Products, Sep., 1975, p. 112, display calculator #320.