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Nicholas Vrionis
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Los Altos, CA, US
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last 30 patents
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Patent Grant
Optical meter reader using a shadow
Patent number
5,880,464
Issue date
Mar 9, 1999
Diablo Research Corporation
Nick G. Vrionis
G01 - MEASURING TESTING
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Patent Grant
Measuring apparatus with readout display
Patent number
5,060,394
Issue date
Oct 29, 1991
Homestar International Inc.
Larry A. Lincoln
G01 - MEASURING TESTING