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Arnold Weghmann
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Weinheim-Lutzelsachsen, DE
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last 30 patents
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Patent Grant
Multilayer electret filter and process of using same
Patent number
4,886,527
Issue date
Dec 12, 1989
Firma Carl Freudenberg
Walter Fottinger
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Patent Grant
Process of producing a pliable roller
Patent number
4,708,756
Issue date
Nov 24, 1987
Firma Carl Freudenberg
Dietmar Busen
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL