Donald S. SEIFORD, SR.

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Winter Garden, FL, US

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Patents Grantslast 30 patents

Information Patent Grant
Convertible vehicle for road, air, and water usage
- Patent number 8,162,253
- Issue date Apr 24, 2012
- Donald S. Seiford, Sr.
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Shaftless radial vane rotary device and a marine propulsion system...
- Patent number 7,284,495
- Issue date Oct 23, 2007
- Donald S. Seiford, Sr.
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Paddle wheel propulsion system and improved paddle used therewith
- Patent number 7,090,553
- Issue date Aug 15, 2006
- Donald S. Seiford, Sr.
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Marine vessel propulsion and tubular rudder system
- Patent number 6,976,444
- Issue date Dec 20, 2005
- Donald S. Seiford, Sr.
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT

Patents Applicationslast 30 patents

Information Patent Application
Convertible Vehicle For Road, Air, and Water Usage
- Publication number 20110042507
- Publication date Feb 24, 2011
- Donald S. SEIFORD, SR.
- B60 - VEHICLES IN GENERAL