WORMALD INDUSTRIAL PROPERTY LIMITED

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4867861 Process and catalyst for the dewaxing of shale oilExpiredJul 21, 88Sep 19, 89[C10G]
4368782 On/off sprinkler head with temperature responsive exhaust port valveExpiredFeb 26, 80Jan 18, 83[A62C]
4298068 Heat sensitive release devicesExpiredDec 15, 78Nov 03, 81[A62C]
D256943 FilterExpiredMar 09, 78Sep 16, 80[D230]
4220452 Detection of gasesExpiredJan 26, 79Sep 02, 80[G01N]
4205820 Control valvesExpiredFeb 02, 78Jun 03, 80[F16K]
4197975 Pool brazing apparatus for manufacturing rotor cagesExpiredJul 07, 78Apr 15, 80[B23K]

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