Fredrick O. Hartenstein

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Martinez, GA, US

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Patents Grantslast 30 patents

Information Patent Grant
Turf playing surface aeration and drainage system
- Patent number 7,033,108
- Issue date Apr 25, 2006
- SubAir Systems, LLC
- George T. Hummert
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES

Patents Applicationslast 30 patents

Information Patent Application
Turf Playing Surface Aeration and Drainage System
- Publication number 20090297271
- Publication date Dec 3, 2009
- George T. Hummert
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES