Douglas J. Hornstra

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Knoxville, TN, US

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Patents Grantslast 30 patents

Information Patent Grant
Security barrier system
- Patent number 8,033,053
- Issue date Oct 11, 2011
- Performance Development Corporation
- Joe W. Anderson
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES

Patents Applicationslast 30 patents

Information Patent Application
Security barrier system
- Publication number 20070101649
- Publication date May 10, 2007
- Joe W. Anderson
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES