SCHLEGEL LINING TECHNOLOGY GMBH

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4787775 Arrangement for transmitting force from a sheet made of polymer material onto a supporting surfaceExpiredFeb 16, 88Nov 29, 88[E21D]
4776613 Pipe joint weld collar and method of installationExpiredMar 23, 87Oct 11, 88[F16L]
4552485 Process and prepressing pipe for laying a pipeline in the earthExpiredOct 22, 82Nov 12, 85[E21D, F16L, B63B]
4519729 Segmented membrane barrierExpiredMay 10, 83May 28, 85[E02D]
4499923 Concrete pipe with an inner liningExpiredMar 22, 84Feb 19, 85[F46L]
4289552 Method for the continuous welding of thermoplastic sheetsExpiredJul 21, 78Sep 15, 81[B32B]

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