Invention Grant
- Patent Title: Portable elevator
- Patent Title (中): 便携式电梯
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Application No.: US35887020Application Date: 1920-02-16
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Publication No.: US1406860APublication Date: 1922-02-14
- Inventor: HESCOCK ETHAN N , SMITH ERNEST F
- Applicant: NEW JERSEY FOUNDRY & MACHINE C
- Assignee: New Jersey Foundry & Machine C
- Current Assignee: New Jersey Foundry & Machine C
- Priority: US35887020 1920-02-16
- Main IPC: B66F9/02
- IPC: B66F9/02
Information query
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