Kanetsu Kogyo Kabushiki Kaisha

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4468648 Switchable permanent magnetic chuckExpiredSep 22, 83Aug 28, 84[H01F]
4468649 Switchable permanent magnetic chuckExpiredNov 08, 83Aug 28, 84[H01F]
4468650 Low tire pressure alarm systemExpiredSep 30, 82Aug 28, 84[B60C]
4462059 Demagnetizing power sourceExpiredOct 07, 81Jul 24, 84[H01F]
4408752 Magnetic chuckExpiredJul 24, 81Oct 11, 83[B25B]
4401960 Magnet assemblyExpiredDec 18, 79Aug 30, 83[H01F]
4354930 Device for separating mixtureExpiredJul 09, 81Oct 19, 82[B03C]
4329673 Switchable permanent magnet holding deviceExpiredJul 25, 80May 11, 82[H01F]
4318804 Device for separating mixtureExpiredNov 07, 80Mar 09, 82[B03C]
4317717 Nonmagnetic conductive material separating apparatusExpiredNov 24, 80Mar 02, 82[B03C]
4251791 Magnetic baseExpiredAug 09, 79Feb 17, 81[H01F]
4230560 Nonmagnetic conductive material separating apparatusExpiredJul 23, 79Oct 28, 80[B03C]

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