Invention Grant
- Patent Title: Nonsinging reamplifying circuits
- Patent Title (中): 非放大再生电路
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Application No.: US63916923Application Date: 1923-05-15
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Publication No.: US1657462APublication Date: 1928-01-31
- Inventor: LLOYD ESPENSCHIED
- Applicant: AMERICAN TELEPHONE & TELEGRAPH
- Assignee: American Telephone & Telegraph
- Current Assignee: American Telephone & Telegraph
- Priority: US63917623 1923-05-15
- Main IPC: F23L7/00
- IPC: F23L7/00 ; H03B19/00 ; H03B19/10 ; H03F3/48
Information query
