Invention Grant
- Patent Title: Relay apparatus
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Application No.: US34542540Application Date: 1940-07-13
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Publication No.: US2252457APublication Date: 1941-08-12
- Inventor: COCKRELL WILLIAM D
- Applicant: GEN ELECTRIC
- Assignee: Gen Electric
- Current Assignee: Gen Electric
- Priority: US34542540 1940-07-13
- Main IPC: H03K5/04
- IPC: H03K5/04
Information query
IPC分类: