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Keith M. Hoffmann
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North St. Paul, MN, US
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last 30 patents
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Patent Grant
Method for radioactive species analysis using a self-scintillating...
Patent number
6,139,749
Issue date
Oct 31, 2000
3M Innovative Properties Company
Garold L. Goken
G01 - MEASURING TESTING
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Patent Grant
Addition of antimicrobial agents to pavement marking materials
Patent number
5,744,239
Issue date
Apr 28, 1998
Minnesota Mining and Manufacturing Company
Gina M. Buccellato
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES