GENERAL MINING UNION CORPORATION LIMITED

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4796531 Mining methodExpiredJul 01, 87Jan 10, 89[F42B]
4770097 Mining method with no delay between shot initiator and firingExpiredJul 01, 87Sep 13, 88[F42D]
4767253 Tunnel cleaning trainExpiredJan 05, 82Aug 30, 88[E21F]
4748118 Construction of arsenic resistance vectors for Thiobacillus ferrooxidansExpiredNov 01, 84May 31, 88[C12N]
4623792 Core loggingExpiredMar 21, 85Nov 18, 86[G01N]
4580684 Radiometric measurementExpiredApr 01, 83Apr 08, 86[B07C]
4490086 Self propelled load distributor vehicleExpiredJan 05, 82Dec 25, 84[B60P]
4445615 Sorting system calibrationExpiredDec 03, 80May 01, 84[B07C]
4434365 Radiometric methods and meansExpiredNov 28, 80Feb 28, 84[G01N, G21C, G01V]
4417817 Volumetric measurement of particlesExpiredJan 26, 81Nov 29, 83[G01B]
4407415 Method of grade determination including compensationExpiredNov 28, 80Oct 04, 83[B07C]
4394907 Displacement error correction in sorting systemsExpiredDec 03, 80Jul 26, 83[B07C]
4395634 Radiometric methods and meansExpiredDec 01, 80Jul 26, 83[G01N, G01T, G01V]
4361238 Ore sorterExpiredFeb 28, 80Nov 30, 82[B07C]
4188165 Loaders for use in tunnelsExpiredSep 29, 77Feb 12, 80[E02F]

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