Invention Grant
- Patent Title: Pneumatic tube
- Patent Title (中): 气动管
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Application No.: US9383436Application Date: 1936-08-01
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Publication No.: US2183760APublication Date: 1939-12-19
- Inventor: WYMAN EDWIN T
- Applicant: WYMAN EDWIN T
- Assignee: Edwin T Wyman
- Current Assignee: Edwin T Wyman
- Priority: US9383436 1936-08-01
- Main IPC: B60C5/04
- IPC: B60C5/04
Information query
