Invention Grant
- Patent Title: Flight indicator
- Patent Title (中): 飞行指示器
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Application No.: US23028438Application Date: 1938-09-16
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Publication No.: US2181444APublication Date: 1939-11-28
- Inventor: ZOOK DAVID F
- Applicant: ZOOK DAVID F
- Assignee: David F Zook
- Current Assignee: David F Zook
- Priority: US23028438 1938-09-16
- Main IPC: G01C9/16
- IPC: G01C9/16
Information query
