Douglas G. Willis

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Fresno, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Braking and steering control apparatus for securing and moving an o...
- Patent number 11,702,123
- Issue date Jul 18, 2023
- Douglas G. Willis
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Grant
Fluid-filled track wheel for improved movement of an object across...
- Patent number 11,679,824
- Issue date Jun 20, 2023
- Douglas G. Willis
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Wheel pad
- Patent number 10,137,731
- Issue date Nov 27, 2018
- Douglas G. Willis
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Articulating carriage
- Patent number 9,950,564
- Issue date Apr 24, 2018
- Douglas G. Willis
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Mobility device having walking wheel assembly for moving an object...
- Patent number 9,844,980
- Issue date Dec 19, 2017
- Douglas G. Willis
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Wheel float with improved pivot joints
- Patent number 9,744,807
- Issue date Aug 29, 2017
- Douglas G. Willis
- B60 - VEHICLES IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Articulating Carriage
- Publication number 20170361651
- Publication date Dec 21, 2017
- William Morris Clapp
- B60 - VEHICLES IN GENERAL
Information Patent Application
Wheel Float with Improved Pivot Joints
- Publication number 20170166006
- Publication date Jun 15, 2017
- Douglas G. Willis
- B60 - VEHICLES IN GENERAL
Information Patent Application
Wheel Pad
- Publication number 20170071340
- Publication date Mar 16, 2017
- Douglas G. Willis
- B60 - VEHICLES IN GENERAL