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John Calvert
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Lancaster, CA, US
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Patents Grants
last 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 Applications
last 30 patents
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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