Duropal-Werk Eberh. Wrede GmbH & Co. Kg

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4751125 Composite panel having a drip grooveExpiredJul 28, 86Jun 14, 88[B32B]
4748780 Composite panels and methods of making composite panelsExpiredMay 07, 87Jun 07, 88[E04C]
4663912 Composite panels and methods of making composite panelsExpiredJan 25, 85May 12, 87[E04C]
4570410 Composite plate and method of making sameExpiredAug 08, 84Feb 18, 86[A47B, B27M, E04C, B27H]

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