John Calvert

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Lancaster, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Wheelie bar for leaf spring equipped cars
- Patent number 8,590,909
- Issue date Nov 26, 2013
- John Calvert
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Traction device for motor vehicles
- Patent number 5,354,092
- Issue date Oct 11, 1994
- John Calvert
- B60 - VEHICLES IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
WHEELIE BAR FOR LEAF SPRING EQUIPPED CARS
- Publication number 20130264805
- Publication date Oct 10, 2013
- John Calvert
- B60 - VEHICLES IN GENERAL
Information Patent Application
Split-leaf spring
- Publication number 20020105117
- Publication date Aug 8, 2002
- John Calvert
- B60 - VEHICLES IN GENERAL