Invention Grant
- Patent Title: Doorway construction
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Application No.: US9927236Application Date: 1936-09-03
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Publication No.: US2154641APublication Date: 1939-04-18
- Inventor: SEAMAN DAVID J
- Applicant: SEAMAN DAVID J
- Assignee: David J Seaman
- Current Assignee: David J Seaman
- Priority: US9927236 1936-09-03
- Main IPC: E06B3/70
- IPC: E06B3/70
Information query
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