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Kenneth J. Hagen
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Woodbury, MN, US
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Patents Grants
last 30 patents
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Patent Grant
Mounting assembly for a light conduit lighting system
Patent number
6,152,578
Issue date
Nov 28, 2000
3M Innovative Properties Company
Joseph A. Hoffman
G02 - OPTICS
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Patent Grant
Coupling system for a light conduit
Patent number
6,130,976
Issue date
Oct 10, 2000
3M Innovative Properties Company
Joseph A. Hoffman
G02 - OPTICS
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Patent Grant
Imaging unit container having shiftable walls
Patent number
5,660,384
Issue date
Aug 26, 1997
Minnesota Mining and Manufacturing Company
Melinda K. Kovach
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL