William D. Bertelsen

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Bay City, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Aircraft and convertible wing assembly
- Patent number 9,637,230
- Issue date May 2, 2017
- Bertelsen Design LLC
- William D. Bertelsen
- B64 - AIRCRAFT AVIATION COSMONAUTICS
Information Patent Grant
Wing assembly and aircraft
- Patent number 7,510,143
- Issue date Mar 31, 2009
- William D. Bertelsen
- B64 - AIRCRAFT AVIATION COSMONAUTICS

Patents Applicationslast 30 patents

Information Patent Application
AIRCRAFT AND CONVERTIBLE WING ASSEMBLY
- Publication number 20160121995
- Publication date May 5, 2016
- Bertelsen Design LLC
- William D. Bertelsen
- B64 - AIRCRAFT AVIATION COSMONAUTICS