Invention Grant
- Patent Title: Intermitter timing device
- Patent Title (中): 间隔器定时装置
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Application No.: US43889142Application Date: 1942-04-14
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Publication No.: US2380969APublication Date: 1945-08-07
- Inventor: KING WILLIAM R
- Applicant: KING WILLIAM R
- Assignee: William R King
- Current Assignee: William R King
- Priority: US43889142 1942-04-14
- Main IPC: E21B43/12
- IPC: E21B43/12
Information query
