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David B. Blackford
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St. Paul, MN, US
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last 30 patents
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Patent Grant
Syringe injection system for measuring non-volatile residue in solv...
Patent number
5,374,396
Issue date
Dec 20, 1994
TSI Incorporated
David B. Blackford
G01 - MEASURING TESTING
Information
Patent Grant
Apparatus and process for determining filter efficiency in removing...
Patent number
5,351,523
Issue date
Oct 4, 1994
TSI Incorporated
David B. Blackford
G01 - MEASURING TESTING
Information
Patent Grant
Single particle detector method and apparatus utilizing light extin...
Patent number
5,121,988
Issue date
Jun 16, 1992
TSI Incorporated
James L. Blesener
G01 - MEASURING TESTING
Information
Patent Grant
Apparatus for measuring impurity concentrations in a liquid
Patent number
5,098,657
Issue date
Mar 24, 1992
TSI Incorporated
David B. Blackford
G01 - MEASURING TESTING