Centre Technique Cuir-Chaussure-Maroquinerie

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5512058 Process for the treatment of skins, hides or shett materials containing collagen by a dense, pressurized fluidExpiredJun 02, 94Apr 30, 96[C14C]
5174030 Apparatus for measuring length and perimeterExpiredSep 03, 91Dec 29, 92[A43D]
4932978 Process and apparatus for automatic finishing of flexible materials, and particularly leathers and hidesExpiredJun 14, 88Jun 12, 90[C14C, B05D, D06P, G01D]
4451397 Method of preparing collagen productsExpiredNov 22, 82May 29, 84[C07G, C08H]

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