Invention Grant
- Patent Title: Amplifying device
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Application No.: US47745730Application Date: 1930-08-23
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Publication No.: US2007946APublication Date: 1935-07-09
- Inventor: DAVIES HENRY R
- Applicant: SIRIAN LAMP CO
- Assignee: Sirian Lamp Co
- Current Assignee: Sirian Lamp Co
- Priority: US47745730 1930-08-23
- Main IPC: H01J17/54
- IPC: H01J17/54
Information query
