Invention Grant
- Patent Title: Phonograph starting and stopping device
- Patent Title (中): 留声机启停装置
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Application No.: US3190225Application Date: 1925-05-21
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Publication No.: US1565158APublication Date: 1925-12-08
- Inventor: LOUIS JURENKA
- Applicant: LOUIS JURENKA
- Assignee: Jurenka Louis
- Current Assignee: Jurenka Louis
- Priority: US3190225 1925-05-21
- Main IPC: G04B23/00
- IPC: G04B23/00
Information query
