CITICORP INDUSTRIAL CREDIT, INC.,

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4673825 Uninterruptible power supply with isolated bypass windingExpiredFeb 15, 85Jun 16, 87[H02J]
4639849 Snubber circuit for H.F. bridge converterExpiredMay 08, 85Jan 27, 87[H02H]
4484306 Method and apparatus for controlling access in a data transmission systemExpiredMar 22, 82Nov 20, 84[G06F]
4484341 Method and apparatus for selectively radiating materials with electrons and X-raysExpiredOct 02, 81Nov 20, 84[G21K]
4475175 Computer communications controlExpiredJan 29, 82Oct 02, 84[H04L, G06F]
4453222 Emergency device employing programmable vocal warning commandsExpiredApr 19, 82Jun 05, 84[G08B, G10L]
D269913 Adjustable lampExpiredAug 14, 80Jul 26, 83[D260]
D269553 Emergency lighting unitExpiredAug 14, 80Jun 28, 83[D260]
4384462 Multiple compressor refrigeration system and controller thereofExpiredNov 20, 80May 24, 83[F25B]
4340805 Welding electrode with a fluoride based slag systemExpiredOct 14, 80Jul 20, 82[B23K]
4330902 Device for breaking the foretoes of sheep carcassesExpiredDec 22, 80May 25, 82[A22B]
4282420 Welding electrodeExpiredFeb 11, 80Aug 04, 81[B23K]
4220511 Treatment of sintered poly-tetrafluoroethylene with irradiation and heat to produce a grindable materialExpiredMar 12, 79Sep 02, 80[C08F]
4202826 Process for preparing anhydride from alkanesExpiredApr 21, 78May 13, 80[C07D]
4190636 Production of carbon monoxide in a plasma arc reactorExpiredSep 26, 78Feb 26, 80[C01B]

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