Invention Grant
- Patent Title: Fire alarm system
- Patent Title (中): 火警系统
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Application No.: US70902646Application Date: 1946-11-09
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Publication No.: US2531391APublication Date: 1950-11-28
- Inventor: HARRY BRAY FREDERICK , FREDERICK BATES ERNEST , CONNELL DOUGHTY JOHN
- Applicant: INT STANDARD ELECTRIC CORP
- Assignee: Int Standard Electric Corp
- Current Assignee: Int Standard Electric Corp
- Priority: GB283940X 1945-10-19
- Main IPC: G08B17/06
- IPC: G08B17/06 ; G08B25/04
Information query
