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Stephen J. Manion
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Altadena, CA, US
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Patents Grants
last 30 patents
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Patent Grant
Method and apparatus for improving performance of a force balance a...
Patent number
6,918,299
Issue date
Jul 19, 2005
Thomas R. Vanzandt
G01 - MEASURING TESTING
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Patent Grant
Method and apparatus for controlling damping and in situ determinat...
Patent number
6,618,325
Issue date
Sep 9, 2003
Thomas R. VanZandt
G01 - MEASURING TESTING
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Patent Grant
Single-coil force balance velocity geophone
Patent number
6,075,754
Issue date
Jun 13, 2000
Thomas R. VanZandt
G01 - MEASURING TESTING
Patents Applications
last 30 patents
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Patent Application
Method and apparatus for improving performance of a force balance a...
Publication number
20030115959
Publication date
Jun 26, 2003
Thomas R. Vanzandt
G01 - MEASURING TESTING