David Len Walls

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Wexford, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Complex electrically operated ground and test device using vacuum c...
- Patent number 9,634,469
- Issue date Apr 25, 2017
- Eaton Corporation
- Richard Blaine Frye
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
COMPLEX ELECTRICALLY OPERATED GROUND AND TEST DEVICE USING VACUUM C...
- Publication number 20160241003
- Publication date Aug 18, 2016
- EATON CORPORATION
- Richard Blaine Frye
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER