Invention Grant
- Patent Title: Acoustical instrument.
- Patent Title (中): 声学仪器
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Application No.: US1912707769Application Date: 1912-07-05
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Publication No.: US1253613APublication Date: 1918-01-15
- Inventor: LUMIERE LOUIS
- Applicant: VICTOR TALKING MACHINE CO
- Assignee: Victor Talking Machine Co
- Current Assignee: Victor Talking Machine Co
- Priority: US1912707769 1912-07-05
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