Invention Grant
- Patent Title: Mercury contact relay
- Patent Title (中): 汞接触继电器
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Application No.: US30252639Application Date: 1939-11-02
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Publication No.: US2247493APublication Date: 1941-07-01
- Inventor: HARRISON HENRY C , POLLARD CHARLES E
- Applicant: BELL TELEPHONE LABOR INC
- Assignee: Nokia Bell Labs
- Current Assignee: Nokia Bell Labs
- Priority: US30252639 1939-11-02
- Main IPC: H01H29/18
- IPC: H01H29/18 ; H01H51/28
Information query
