John Gregal

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Arlington, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Boat water supply winterization system and method
- Patent number 8,839,831
- Issue date Sep 23, 2014
- John Gregal
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT

Patents Applicationslast 30 patents

Information Patent Application
Boat water supply winterization system and method
- Publication number 20110308664
- Publication date Dec 22, 2011
- John Gregal
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT