Baierl & Demmelhuber GmbH & Co. Akustik & Trockenbau KG

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5030289 Durable and highly stable molded construction partsExpiredJan 19, 90Jul 09, 91[C04B]
4808229 Asbestos-free building material plates and method of making sameExpiredNov 15, 85Feb 28, 89[C04B]
4742665 Metallic spatial framework structure composed of single elements for erecting buildingsExpiredMay 06, 87May 10, 88[E04B]

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