David A. Senften

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St. Peters, MO, US

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Patents Grantslast 30 patents

Information Patent Grant
Magnetic coupling and uncoupling system for model railroad rolling...
- Patent number 7,293,671
- Issue date Nov 13, 2007
- David A. Senften
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Magnetic coupling and uncoupling system for model railroad rolling...
- Patent number 7,080,745
- Issue date Jul 25, 2006
- David A. Senften
- A63 - SPORTS GAMES AMUSEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Magnetic coupling and uncoupling system for model railroad rolling...
- Publication number 20060254999
- Publication date Nov 16, 2006
- David A. Senften
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Application
Magnetic coupling and uncoupling system for model railroad rolling...
- Publication number 20050199570
- Publication date Sep 15, 2005
- David A. Senften
- A63 - SPORTS GAMES AMUSEMENTS