Tracy Don Witham

Follow

Person

Sauk Rapids, MN, US

People

Patents Grantslast 30 patents

Information Patent Grant
Quadrimanual forward-rowing device with semi-independent oars
- Patent number 8,257,123
- Issue date Sep 4, 2012
- Tracy Don Witham
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Recumbent quadrimanual forward-rowing device
- Patent number 6,817,913
- Issue date Nov 16, 2004
- Tracy Don Witham
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT

Patents Applicationslast 30 patents

Information Patent Application
Cycling Hull with Slow-Relative-Motion Hydrodynamics
- Publication number 20160325813
- Publication date Nov 10, 2016
- Tracy Don Witham
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT