David A. Drinkard

Follow

Person

Beaumont, TX, US

People

Patents Applicationslast 30 patents

Information Patent Application
Paddle-Drum Propulsion System for Propeller-Based Watercraft Engines
- Publication number 20120094554
- Publication date Apr 19, 2012
- David A. Drinkard
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT