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last 30 patents
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Patent Grant
High sensitivity optical fluid-borne particle detection
Patent number
6,137,572
Issue date
Oct 24, 2000
Pacific Scientific Instruments Company
Richard K. DeFreez
G01 - MEASURING TESTING
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Patent Grant
Dual laser heterodyne optical particle detection technique
Patent number
5,946,092
Issue date
Aug 31, 1999
Pacific Scientific Instruments Company
Richard K. DeFreez
G01 - MEASURING TESTING