PAULIUKONIS, GRAZINA J.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4834347 Positioner with large diameter piston rod and fluted volume-compensating pistonExpiredApr 20, 88May 30, 89[F16F]
4824081 Pistonless-plunger positioner with internal cylinder and annular fluid spaceExpiredApr 13, 87Apr 25, 89[F16F]
4667780 Re-chargeable servo cylinderExpiredMar 22, 85May 26, 87[F16F]
4570669 Simplified springless check valveExpiredNov 26, 84Feb 18, 86[F16K]
4543983 O-ring solenoid water valvesExpiredJun 04, 82Oct 01, 85[F16K]
4501289 Fluid proportioning diverter valveExpiredAug 24, 82Feb 26, 85[F16K]
4494912 Energy conserving air pumpExpiredSep 16, 82Jan 22, 85[F04B]
4457210 Rotary actuator with energy conservationExpiredSep 24, 82Jul 03, 84[F15B]
4457498 Force balanced die cylindersExpiredApr 27, 82Jul 03, 84[F16F]
4441687 O-ring solenoid valveExpiredMay 15, 81Apr 10, 84[F16K]
4418717 Modular pressure letdown valveExpiredDec 08, 80Dec 06, 83[F16K]
4320782 Universal momentary contact diverterExpiredAug 22, 80Mar 23, 82[F16K]
4321021 Metering pumpExpiredJun 11, 79Mar 23, 82[F04B]
4317469 Momentary contact diverter valveExpiredJul 17, 80Mar 02, 82[F16K]
4290579 O-ring solenoid valvesExpiredDec 22, 78Sep 22, 81[F16K]
4270571 High pressure letdown valveExpiredJul 06, 79Jun 02, 81[F16K]
4242571 Electro-thermal linear pull actuatorExpiredJan 29, 79Dec 30, 80[H05B]
4231399 Momentary contact reversing diverterExpiredFeb 05, 79Nov 04, 80[F16K]
4220312 Cryosolenoid valveExpiredDec 12, 77Sep 02, 80[F16K]
4189285 Metering pumpExpiredDec 04, 75Feb 19, 80[F01L, F04B, F01B]

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