Dan Pendergrass

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Tucson, AZ, US

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Patents Grantslast 30 patents

Information Patent Grant
Pressure and vacuum assisted vertical axis wind turbines
- Patent number 10,487,799
- Issue date Nov 26, 2019
- Dan Pendergrass
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...

Patents Applicationslast 30 patents

Information Patent Application
PRESSURE AND VACUUM ASSISTED VERTICAL AXIS WIND TURBINES
- Publication number 20170175706
- Publication date Jun 22, 2017
- Dan Pendergrass
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...