Invention Grant
- Patent Title: Variable speed transmission
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Application No.: US7160836Application Date: 1936-03-30
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Publication No.: US2181380APublication Date: 1939-11-28
- Inventor: POLLARD WILLARD L
- Applicant: POLLARD WILLARD L
- Assignee: Willard L Pollard
- Current Assignee: Willard L Pollard
- Priority: US7160836 1936-03-30
- Main IPC: F16H15/38
- IPC: F16H15/38 ; F16H37/00 ; F16H37/08
Information query
IPC分类:
