Invention Grant
- Patent Title: Door engine
- Patent Title (中): 门引擎
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Application No.: US51469121Application Date: 1921-11-12
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Publication No.: US1692034APublication Date: 1928-11-20
- Inventor: GRIFFIN PERCY M
- Applicant: CONS CAR HEATING CO INC
- Assignee: Cons Car Heating Co Inc
- Current Assignee: Cons Car Heating Co Inc
- Priority: US51469121 1921-11-12
- Main IPC: E05F15/02
- IPC: E05F15/02
Information query
