Invention Grant
- Patent Title: Door-operating mechanism.
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Application No.: US1905283252Application Date: 1905-10-18
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Publication No.: US820949APublication Date: 1906-05-22
- Inventor: BELL CHESTER A
- Applicant: BELL CHESTER A
- Assignee: Chester A Bell
- Current Assignee: Chester A Bell
- Priority: US1905283252 1905-10-18
Information query
