Invention Grant
- Patent Title: Means for locking and unlocking doors
- Patent Title (中): 用于锁定和解锁门的装置
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Application No.: US59885156Application Date: 1956-07-19
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Publication No.: US2932536APublication Date: 1960-04-12
- Inventor: PYKNEN GEORGE R
- Applicant: VARIETY MFG & ENGINEERING CO I
- Assignee: Variety Mfg & Engineering Co I
- Current Assignee: Variety Mfg & Engineering Co I
- Priority: US59885156 1956-07-19
- Main IPC: E05B63/20
- IPC: E05B63/20 ; E05B65/10
Information query
