C-Tec, Inc.

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Patent Activity in the Last 10 Years

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5111630 Access floor panel with peripheral trimExpiredFeb 15, 89May 12, 92[E04F]
5048242 Access floor system with hemmed edge panelExpiredApr 04, 90Sep 17, 91[E04B]
4850176 Access floor panel with peripheral trimExpiredDec 28, 87Jul 25, 89[E04F]
4729859 Method for casting concrete panelsExpiredSep 29, 86Mar 08, 88[B28B]
4719727 Access floor panelExpiredOct 04, 85Jan 19, 88[E04B]
4639204 Apparatus for centrifugally casting concrete panelsExpiredJun 12, 85Jan 27, 87[B28B]
4606156 Access flooring panelExpiredAug 04, 83Aug 19, 86[E04B]
4319520 Air flow floor panelExpiredJan 07, 80Mar 16, 82[E04B]

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