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Sigbert Widmann
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Donzdorf, DE
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last 30 patents
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Patent Grant
Strip-shaped filter material with crimps molded in and filter eleme...
Patent number
5,080,790
Issue date
Jan 14, 1992
Knecht Filterwerke GmbH
Sigbert Widmann
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL