Friedrichsfeld GmbH, Keramikund Kunststoffwerke

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5000746 Wound covering having connected discrete elementsExpiredAug 11, 88Mar 19, 91[A61F]
4938694 Screw implantExpiredAug 11, 88Jul 03, 90[A61C]
4903397 Process for producing a heating elementExpiredMar 29, 89Feb 27, 90[H05B]
4865606 Endoprosthesis for a knee-jointExpiredAug 11, 88Sep 12, 89[A61F]
4770442 Electroweld fitting or electroweld collarExpiredNov 12, 86Sep 13, 88[F16L]
4682797 Connecting arrangement with a threaded sleeveExpiredJun 25, 86Jul 28, 87[F16L]

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