Douglas G. Willis

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Colby, KS, US

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Patents Grantslast 30 patents

Information Patent Grant
Quad-caster carriage with forklift attachment
- Patent number 7,506,405
- Issue date Mar 24, 2009
- Martin Mobile Company, LLC
- Douglas G. Willis
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Articulated caster
- Patent number 7,500,285
- Issue date Mar 10, 2009
- Martin Mobile Company, LLC
- Douglas G. Willis
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Articulated caster
- Patent number 7,146,683
- Issue date Dec 12, 2006
- Martin Mobile Company, LLC
- Douglas G. Willis
- B60 - VEHICLES IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
ARTICULATED CASTER WITH PIVOT BOX JOINT
- Publication number 20070220704
- Publication date Sep 27, 2007
- Douglas G. Willis
- B60 - VEHICLES IN GENERAL
Information Patent Application
DETACHABLE DRIVE UNIT FOR MOBILE CARRIAGE
- Publication number 20070221419
- Publication date Sep 27, 2007
- Douglas G. Willis
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Application
ARTICULATED CASTOR BRAKING SYSTEM
- Publication number 20070039786
- Publication date Feb 22, 2007
- Douglas G. Willis
- B60 - VEHICLES IN GENERAL
Information Patent Application
ARTICULATED CASTER
- Publication number 20060288523
- Publication date Dec 28, 2006
- Martin Mobile Company, LLC
- Douglas G. Willis
- B60 - VEHICLES IN GENERAL
Information Patent Application
ARTICULATED CASTER
- Publication number 20060196006
- Publication date Sep 7, 2006
- Douglas G. Willis
- B60 - VEHICLES IN GENERAL
Information Patent Application
QUAD-CASTER CARRIAGE WITH FORKLIFT ATTACHMENT
- Publication number 20060196007
- Publication date Sep 7, 2006
- Douglas G. Willis
- B60 - VEHICLES IN GENERAL