Flygt Aktiebolag

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Patent Activity in the Last 10 Years

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
D342307 ValveExpiredMar 08, 91Dec 14, 93[]
5011370 Centrifugal pumpExpiredFeb 05, 90Apr 30, 91[F03B]
4981417 Closed type impellerExpiredAug 08, 89Jan 01, 91[F04F]
4965409 Cable entry connection of an electric power cable to a submersible machineExpiredAug 01, 89Oct 23, 90[H02K, H02G]
4948342 Method and device for automatic circulation in a waste water pump stationExpiredNov 29, 89Aug 14, 90[F04B]
4929875 Method to control stops of an intermittently operating driving motorExpiredJun 28, 89May 29, 90[H02P]
4925375 Device for automatic circulation in a waste water pump stationExpiredJun 22, 89May 15, 90[F04B]
D306033 Submersible mixerExpiredNov 02, 87Feb 13, 90[]
4801244 DeviceExpiredJun 04, 87Jan 31, 89[B63H, F16J]
4771699 Device for cable transportExpiredMar 31, 87Sep 20, 88[B61B]
4749335 Rotary jointExpiredOct 16, 87Jun 07, 88[B63H, F01D]
D294030 Flow stabilizer attachment for the inlet port of a pumpExpiredMar 04, 85Feb 02, 88[]
4721392 Method and a device for installation of a mixerExpiredApr 03, 86Jan 26, 88[B01F]
4687175 Attaching deviceExpiredMay 05, 86Aug 18, 87[F16M]
4682069 Key joint apparatus for assembly of electrical motorsExpiredMay 08, 86Jul 21, 87[H02K, F16B]
4653977 Pump for mixing and pumping liquidsExpiredJan 22, 85Mar 31, 87[F04D]
4437017 Arrangement for hydroelectric power plantsExpiredFeb 10, 82Mar 13, 84[F03B, E02B]

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