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Charles E. Greway
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Huntingdon Valley, PA, US
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Patents Grants
last 30 patents
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Patent Grant
Electrolytic-tilt-sensor
Patent number
6,688,013
Issue date
Feb 10, 2004
The Fredericks Company
Charles E. Greway
G01 - MEASURING TESTING
Patents Applications
last 30 patents
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Patent Application
Electrolytic tilt-sensor
Publication number
20030110652
Publication date
Jun 19, 2003
Charles E. Greway
G01 - MEASURING TESTING