Invention Grant
- Patent Title: Shutter for motion-picture projectors and cameras
- Patent Title (中): 运动图像投影机和相机的快门
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Application No.: US24161727Application Date: 1927-12-21
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Publication No.: US1749154APublication Date: 1930-03-04
- Inventor: O'HAGEN ARCHIBALD M , BERGER GEORGE C
- Applicant: O'HAGEN ARCHIBALD M , BERGER GEORGE C
- Assignee: Archibald M O'hagen,George C Berger
- Current Assignee: Archibald M O'hagen,George C Berger
- Priority: US24161727 1927-12-21
- Main IPC: G03B9/10
- IPC: G03B9/10
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