MASCHINENFABRIK HELLMUT GEIGER GMBH. & CO. KG, HARDECKSTRASSE 3, 7500 KARLSRUHE 21, BRD

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5171436 Apparatus for the conveyance of screeningExpiredOct 25, 89Dec 15, 92[B01D]
4921599 Double-rack grating for use in wastewaterExpiredMay 06, 88May 01, 90[B01D]
4902410 Interceptor for the continuous removal of solid matter from a mixture of solids and liquidExpiredMay 06, 88Feb 20, 90[B01D]
4593648 Electric fish-repelling deviceExpiredApr 23, 84Jun 10, 86[A01M]

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