SIA SCHWEIZER SCHMIRGEL-UND SCHLEIFINDUSTRIE AG

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5531104 Device and method for automatic detection of the height of sedimentation in a sedimentometerExpiredFeb 27, 95Jul 02, 96[G01N]
4437269 Abrasive and polishing sheetsExpiredAug 05, 80Mar 20, 84[B24D]
4364746 Abrasive materialExpiredOct 15, 80Dec 21, 82[C09K]

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