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John Hanselman
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Needham, MA, US
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last 30 patents
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Patent Grant
Method and device for measuring the thickness of opaque and transpa...
Patent number
6,348,967
Issue date
Feb 19, 2002
Active Impulse Systems, Inc.
Keith A. Nelson
G01 - MEASURING TESTING
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Patent Grant
Method and device for measuring the thickness of opaque and transpa...
Patent number
6,081,330
Issue date
Jun 27, 2000
Active Impulse Systems, Inc.
Keith A. Nelson
G01 - MEASURING TESTING
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Patent Grant
Method and device for measuring the thickness of opaque and transpa...
Patent number
5,812,261
Issue date
Sep 22, 1998
Active Impulse Systems, Inc.
Keith A. Nelson
G01 - MEASURING TESTING