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Roger K. Westerberg
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Cottag Grove, MN, US
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last 30 patents
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Patent Grant
Universal lattice for magnetic electronic article surveillance system
Patent number
5,349,502
Issue date
Sep 20, 1994
Minnesota Mining and Manufacturing Company
Roger K. Westerberg
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Patent Grant
Electronic article surveillance interrogation panel unit
Patent number
D346341
Issue date
Apr 26, 1994
Minnesota Mining and Manufacturing Company
Roger K. Westerberg
D10 - Measuring, testing, or signalling instruments
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Patent Grant
Electronic article surveillance unit
Patent number
D317272
Issue date
Jun 4, 1991
Minnesota Mining and Manufacturing Company
Roland W. Rubertus
D10 - Measuring, testing, or signalling instruments
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Patent Grant
Universal lattice for magnetic-electronic article surveillance system
Patent number
4,994,939
Issue date
Feb 19, 1991
Minnesota Mining and Manufacturing Company
Roland W. Rubertus
G08 - SIGNALLING