Andrew Gerla

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Provo, UT, US

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Patents Grantslast 30 patents

Information Patent Grant
Roof bolt bit
- Patent number 8,240,404
- Issue date Aug 14, 2012
- David R. Hall
- E21 - EARTH DRILLING MINING
Information Patent Grant
Water extraction apparatus
- Patent number 7,766,998
- Issue date Aug 3, 2010
- David R. Hall
- F24 - HEATING RANGES VENTILATING

Patents Applicationslast 30 patents

Information Patent Application
Water Extraction Apparatus
- Publication number 20090183631
- Publication date Jul 23, 2009
- David R. Hall
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Roof Bolt Bit
- Publication number 20090000828
- Publication date Jan 1, 2009
- David R. Hall
- E21 - EARTH DRILLING MINING