Deutsche Babcock Aktiengesellschaft

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4580676 Chain conveyorExpiredAug 16, 82Apr 08, 86[B65G]
4564300 Bearing support standExpiredJun 18, 82Jan 14, 86[F16C]
4526111 Nozzle for a fluidized bed firing systemExpiredMay 23, 83Jul 02, 85[F23G, B05B]
4512265 Wet ash removerExpiredApr 09, 82Apr 23, 85[F23J]
4469332 Seal for a tubular millExpiredSep 24, 82Sep 04, 84[B02C, F16J]
4465021 Steam generator with a main boiler and a fluidized bed furnaceExpiredJul 16, 82Aug 14, 84[F22B]
4422389 Solid-fuel burnerExpiredJun 25, 82Dec 27, 83[F23M]
4400111 Arrangement for raising and lowering a floating offshore platformExpiredFeb 27, 81Aug 23, 83[E02B]
4377119 Method for burning materials having components that are difficult to burn out, and apparatus for carrying out the sameExpiredOct 08, 80Mar 22, 83[F23G]
4329929 Wet deasherExpiredOct 20, 80May 18, 82[F23J]
4328007 Apparatus for gasification of fine-grain coalExpiredJul 17, 80May 04, 82[C10J]
4318640 Lifting islandExpiredSep 12, 79Mar 09, 82[E02B]
4313398 Steam generatorExpiredOct 22, 79Feb 02, 82[B09B]
4301746 DeasherExpiredJun 20, 80Nov 24, 81[F23J]
4294592 Apparatus for the hydraulic transport of precipitator dustExpiredJun 20, 80Oct 13, 81[B03C]
4292054 Apparatus for monitoring the temperature of adsorbersExpiredAug 20, 79Sep 29, 81[B01D]
4265613 Safety device for an oil burnerExpiredMar 05, 79May 05, 81[F23D]
4256606 Arrangement for the thermal regeneration of charged active coke or active carbon granulateExpiredFeb 14, 79Mar 17, 81[C01B, F27B, B01J]
4240590 Blower beater millExpiredApr 30, 79Dec 23, 80[B02C]
4235483 Bearing support standExpiredAug 21, 78Nov 25, 80[F16C]

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