Invention Grant
- Patent Title: Door-check.
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Application No.: US1911666886Application Date: 1911-12-20
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Publication No.: US1035298APublication Date: 1912-08-13
- Inventor: ASPEGREN WILLIAM H
- Applicant: ASPEGREN WILLIAM H
- Assignee: William H Aspegren
- Current Assignee: William H Aspegren
- Priority: US1911666886 1911-12-20
Information query
