William M. Zilm

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Glenwood Springs, CO, US

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Patents Grantslast 30 patents

Information Patent Grant
Methods and apparatus for ball and socket coupling
- Patent number 8,205,905
- Issue date Jun 26, 2012
- William M. Zilm
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Hitch system for use with a ball hitch and methods therefore
- Patent number 7,588,262
- Issue date Sep 15, 2009
- William M. Zilm
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Trailer hitch and extension coupling for use therewith
- Patent number 6,186,530
- Issue date Feb 13, 2001
- Zilm Research and Development, LLP
- William M. Zilm
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Grant
Extension coupling for use with trailers
- Patent number 5,890,728
- Issue date Apr 6, 1999
- William M. Zilm
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS

Patents Applicationslast 30 patents

Information Patent Application
Methods and Apparatus for Ball and Socket Coupling
- Publication number 20120043738
- Publication date Feb 23, 2012
- William M. Zilm
- B60 - VEHICLES IN GENERAL
Information Patent Application
HITCH SYSTEM FOR USE WITH A BALL HITCH AND METHODS THEREFORE
- Publication number 20090250900
- Publication date Oct 8, 2009
- William M. Zilm
- B60 - VEHICLES IN GENERAL
Information Patent Application
Extension Coupling With Angle Adjusting Retainer For Use With Trailers
- Publication number 20090121452
- Publication date May 14, 2009
- William M. Zilm
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS