Invention Grant
- Patent Title: Combined sound and picture reproducing apparatus
- Patent Title (中): 组合声音和图像再现装置
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Application No.: US11344136Application Date: 1936-11-30
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Publication No.: US2139152APublication Date: 1938-12-06
- Inventor: FRANK FREIMANN
- Applicant: ELECTRO ACOUSTIC PRODUCTS COMP
- Assignee: Electro Acoustic Products Comp
- Current Assignee: Electro Acoustic Products Comp
- Priority: US11344136 1936-11-30
- Main IPC: G03B31/00
- IPC: G03B31/00
Public/Granted literature
- US07213431B1 Method of manufacturing an aluminum alloy wheel Public/Granted day:2007-05-08
Information query
