Invention Grant
- Patent Title: Door operating mechanism
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Application No.: US41738129Application Date: 1929-12-30
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Publication No.: US1941454APublication Date: 1934-01-02
- Inventor: AINSWORTH HARRY G
- Applicant: AINSWORTH HARRY G
- Assignee: Harry G Ainsworth
- Current Assignee: Harry G Ainsworth
- Priority: US41738129 1929-12-30
- Main IPC: E05F15/12
- IPC: E05F15/12
Information query
