Main circuit breaker

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Information

Patent Grant
D317004

References
Source

Patent Number
D317,004
Date Filed
Wednesday, July 19, 1989
35 years ago
Date Issued
Tuesday, May 21, 1991
33 years ago

Inventors
Original Assignees
- Square D Company
Examiners
- Lucas; Susan J.
- Sincavage; Joel
Agents
- Jimenez; Jose W.
- Stine; Thomas K.

US Classifications
- D13 - Equipment for production, distribution, or transformation of energy
Field of Search
- US
- D13 158
- D13 160
- D13 169
- 335 8
- 335 9
- 335 10
- 335 17
- 335 44
- 335 132
- 335 202
- 200 293
- 200 294
- 200 303
- 200 308
- 200 309
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a main circuit breaker, as shown and described.

US Referenced Citations (4)

Number	Name	Date	Kind
D221953	Zecca	Sep 1971
D246851	Tarchalski et al.	Jan 1978
2922004	Miller et al.	Jan 1960
3098902	Meyer	Jul 1963

Non-Patent Literature Citations (2)

Entry
Breaker on p. 3 of FPE Catalog, 9-63.
Federal Pacific 2 Pole Main Breaker on p. 94 of Bennett Brass and Copper Catalog, 1987.