Invention Grant
- Patent Title: Shutter for motion-picture machines
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Application No.: US30431119Application Date: 1919-06-14
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Publication No.: US1330519APublication Date: 1920-02-10
- Inventor: DAVIS HARRY E , HARTMAN HARRY A
- Applicant: DAVIS HARRY E , HARTMAN HARRY A
- Assignee: Harry E Davis,Harry A Hartman
- Current Assignee: Harry E Davis,Harry A Hartman
- Priority: US30431119 1919-06-14
- Main IPC: G03B9/10
- IPC: G03B9/10
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