Invention Grant
- Patent Title: Propeller
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Application No.: US16655537Application Date: 1937-09-30
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Publication No.: US2214622APublication Date: 1940-09-10
- Inventor: LORENZEN ROGER E
- Applicant: LORENZEN ROGER E
- Assignee: Roger E Lorenzen
- Current Assignee: Roger E Lorenzen
- Priority: US16655537 1937-09-30
- Main IPC: B64C11/06
- IPC: B64C11/06
Public/Granted literature
- US11596353B2 Multilayer wearable device Public/Granted day:2023-03-07
Information query
