Invention Grant
- Patent Title: Ventilating device.
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Application No.: US1907384822Application Date: 1907-07-20
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Publication No.: US893670APublication Date: 1908-07-21
- Inventor: STEIN CHARLES
- Applicant: STEIN CHARLES
- Assignee: Charles Stein
- Current Assignee: Charles Stein
- Priority: US1907384822 1907-07-20
Information query
