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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Expired/Abandoned/Withdrawn Patents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
5363548 Sheet-wound coilsExpiredJan 06, 93Nov 15, 94[H01F]
4986340 Method for stirring and/or braking of melts and a device for carrying out this methodExpiredJul 30, 90Jan 22, 91[B22D]
4941087 System for bumpless changeover between active units and backup units by establishing rollback points and logging write and read operationsExpiredSep 18, 87Jul 10, 90[G06F]
D307415 Programming and control box for an industrial robotExpiredDec 05, 86Apr 24, 90[]
D306603 Welding seam trackerExpiredJan 07, 87Mar 13, 90[]
4896865 Force-absorbing means in a furnaceExpiredApr 23, 87Jan 30, 90[C21B]
4890028 Rotor for a turbo-generatorExpiredApr 25, 84Dec 26, 89[H02K]
4888708 Control system for an industrial robotExpiredJun 27, 83Dec 19, 89[G05B]
4880972 Fiber-optic measuring apparatus using luminescent materialExpiredMar 04, 85Nov 14, 89[G01N, G02B, G01P]
4859887 Synchronous machineExpiredAug 06, 87Aug 22, 89[H02K]
4857687 Induction apparatus for heating edge portion of billetExpiredOct 12, 88Aug 15, 89[H05B]
4849917 Speed difference measurement in strip castingExpiredMar 27, 87Jul 18, 89[G01P, B22D]
4831232 Industrial robot equipment capable of automatically terminating operation at a desired sensed locationExpiredSep 16, 87May 16, 89[B23K]
D300935 Industrial robotExpiredJul 15, 86May 02, 89[]
4825709 Magnetoelastic force transducerExpiredDec 10, 87May 02, 89[G01L]
4825182 Electrical switching deviceExpiredNov 13, 87Apr 25, 89[H01H]
4819184 Method and a device for optimum control of control parameters in an industrial robotExpiredSep 29, 87Apr 04, 89[G05B]
4816760 Method and apparatus for detecting the position of an edge of a test pieceExpiredOct 08, 86Mar 28, 89[G01N, G01B, G01R]
4815006 Method and device for calibrating a sensor on an industrial robotExpiredSep 16, 87Mar 21, 89[G05B, B25J]
4812132 Arrangement for distributing a cable assemblage betwen two mutually rotatable component partsExpiredMay 13, 87Mar 14, 89[H01R]

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