Franklin J. Day

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Walnut Creek, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Crank with clutch and coupler
- Patent number 7,607,370
- Issue date Oct 27, 2009
- Franklin J. Day
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Grant
Pedaling mechanism for bicycles and the like
- Patent number 5,860,329
- Issue date Jan 19, 1999
- Franklin J. Day
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS

Patents Applicationslast 30 patents

Information Patent Application
CRANK ARM DRIVE REGULATING MECHANISM
- Publication number 20180362113
- Publication date Dec 20, 2018
- Franklin J. DAY
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Application
EVALUATING PEDALING EFFICIENCY
- Publication number 20180321096
- Publication date Nov 8, 2018
- Franklin J. DAY
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Application
Crank mechanism and bicycle incorporating same
- Publication number 20100167881
- Publication date Jul 1, 2010
- Franklin J. Day
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Application
Crank with clutch and coupler
- Publication number 20070039412
- Publication date Feb 22, 2007
- Franklin J. Day
- Franklin J. Day
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS