Invention Grant
- Patent Title: Jack
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Application No.: US63984123Application Date: 1923-05-18
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Publication No.: US1486797APublication Date: 1924-03-11
- Inventor: PIPER GEORGE A
- Applicant: GEORGE W LAING
- Assignee: George W Laing
- Current Assignee: George W Laing
- Priority: US63984123 1923-05-18
- Main IPC: B66F3/04
- IPC: B66F3/04
Information query
IPC分类: