Richard L. Hart

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Portland, OR, US

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Patents Applicationslast 30 patents

Information Patent Application
Powered trailer dolly
- Publication number 20080308325
- Publication date Dec 18, 2008
- Richard L. Hart
- B60 - VEHICLES IN GENERAL
Information Patent Application
Powered trailer dolly
- Publication number 20070151776
- Publication date Jul 5, 2007
- Richard L. Hart
- B60 - VEHICLES IN GENERAL