Invention Grant
- Patent Title: Film projector housing construction
- Patent Title (中): 电影放映机房建设
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Application No.: US5622248Application Date: 1948-10-23
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Publication No.: US2614458APublication Date: 1952-10-21
- Inventor: CRITOPH DAVID I , HERRMANN JOHN F , WOLFORD FRED H
- Applicant: AMERICAN OPTICAL CORP
- Assignee: American Optical Corp
- Current Assignee: American Optical Corp
- Priority: US5622248 1948-10-23
- Main IPC: G03B23/12
- IPC: G03B23/12
Information query
