John D. Neff

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Austin, TX, US

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Patents Applicationslast 30 patents

Information Patent Application
FLOOD-ACTUATED ROADBLOCK BARRIER GATE
- Publication number 20130314254
- Publication date Nov 28, 2013
- John D. Neff
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Application
Flood-actuated roadblock barrier gate
- Publication number 20090060649
- Publication date Mar 5, 2009
- John D. Neff
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES