Invention Grant
- Patent Title: Automatic volume control circuits
- Patent Title (中): 自动音量控制电路
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Application No.: US4135935Application Date: 1935-09-20
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Publication No.: US2144920APublication Date: 1939-01-24
- Inventor: HOLST POUL F G
- Applicant: RCA CORP
- Assignee: RCA Corp
- Current Assignee: RCA Corp
- Priority: US4135935 1935-09-20
- Main IPC: H03G3/22
- IPC: H03G3/22
Information query
