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Patent Protection Ended

No. Patent No. Title
961. PI 87000315 A METHOD AND AN APPARATUS FOR THE PRODUCTION OF RIBBED PIPES
962. PI 87000318 FINELY POWDERED POLYVALENT METAL SALTS OF 2-MERCAP- TOPYRIDINE-N-OXIDE, METHOD FOR PRODUCING THE SAME AND ANTIBACTERIAL COMPOSITIONS COMPRISING THE SAME.
963. PI 87000320 ELECTROLYTIC PROCESS FOR THE PREPARATION OF RARE EARTHS OR ALLOYS THEREOF AND APPARATUS FOR CARRYING OUT THE PROCESS
964. PI 87000322 ADAPTIVE CONTROL SYSTEM FOR AN INTERNAL COMBUSTION ENGINE.
965. PI 87000323 IGNITION SYSTEM
966. PI 87000324 ADAPTIVE CONTROL SYSTEM FOR AN INTERNAL COMBUSTION ENGINE.
967. PI 87000325 PULSE GENERATING CIRCUIT FOR AN IGNITION SYSTEM
968. PI 87000326 METHOD AND APPARATUS FOR INJECTION MOLDING END STOPS ON SLIDE FASTENER.
969. PI 87000327 AUTOMATIC DOOR WITH AUTOMATIC LOCK SYSTEM
970. PI 87000328 ELASTOPLASTIC COMPOSITIONS
971. PI 87000329 METHOD AND APPARATUS FOR INCREASING CARBON CONTENT OF HOT DIRECTLY REDUCED IRON
972. PI 87000330 METHOD OF INCREASING CARBON CONTENT OF DIRECT REDUCED IRON.
973. PI 87000331 HAIR RINSE COMPOSITION
974. PI 87000332 NOVEL POLYOL ETHER COMPOUNDS, PROCESS FOR PREPARING THE COMPOUNDS, AND COSMETICS COMPRISING SAME.
975. PI 87000334 EQUIPMENT PACKS
976. PI 87000335 IMPROVEMENTS TO SAILBOARD BOOMS
977. PI 87000336 SOLAR WATER HEATER
978. PI 87000337 WASHING MACHINES
979. PI 87000338 RESIST COMPOSITIONS AND USE
980. PI 87000340 INTERNAL COMBUSTION ENGINE COIL-TYPE IGNITION CONTROL.