Michael Dale Duignan

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San Pedro, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Auxiliary power driven unit for a bicycle
- Patent number 8,573,346
- Issue date Nov 5, 2013
- Michael Dale Duignan
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS

Patents Applicationslast 30 patents

Information Patent Application
AUXILIARY POWER DRIVEN UNIT FOR A BICYCLE
- Publication number 20110168471
- Publication date Jul 14, 2011
- Michael Dale Duignan
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS