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Patent Protection Ended

No. Patent No. Title
3961. PI 88000829 CAN WITH DOMED BOTTOM STRUCTURE
3962. PI 88000830 WATER-PROOF CONNECTOR
3963. PI 88000832 RESIN COMPOSITION FOR SPACERS OF INFORMATION RECORDING DISC
3964. PI 88000833 ELECTROLYTIC CELL APPARATUS
3965. PI 88000834 FILM DISPENSER
3966. PI 88000835 DOWNHOLE CIRCULATION VALVE
3967. PI 88000836 INSECTICIDAL COMPOUNDS - CHARACTERISED BY ENHANCED KNOCKDOWN EFFECT.
3968. PI 88000837 FLUID BARRIER SEAL FOR SANITARY NAPKIN HAVING UNDERGARMENT PROTECTING FLAPS
3969. PI 88000840 SPIN-ON GLASS FOR USE IN SEMICONDUCTOR PROCESSING
3970. PI 88000841 CONNECTING DEVICE FOR SHUTTERING PANELS
3971. PI 88000844 FILM DISPENSER
3972. PI 88000845 ALPHA-HALOPYRUVATE OXIME
3973. PI 88000846 METHOD OF MAGNETIZING WILL TUBULARS
3974. PI 88000849 METAL PLATE OF PART MOUNTING DEVICE AND PROCESS FOR PRODUCING THE SAME
3975. PI 88000850 THE HOMOGENEOUS PARTIAL OXIDATION OF A METHANE- CONTAINING PARAFFINIC HYDROCARBON.
3976. PI 88000851 NEGATIVE PHOTORESIST SYSTEMS
3977. PI 88000852 CONDUCTING OR CATALYSING A CHEMICAL REACTION ON A SURFACE ESPECIALLY ELECTROLESS METAL DEPOSITION AND CATALYST SYSTEMS USED THEREIN
3978. PI 88000853 PHOTOSENSITIVE COATING COMPOSITIONS,THERMALLY STABLE COATINGS PREPARED FROM THEM, AND THE USE OF SUCH COATNGS IN FORMING THERMALLY STABLE POLYMER IMAGES
3979. PI 88000855 INTERMEDIATE FREQUENCY CONVERTER CIRCUIT FOR MULTIPLEX BROADCASTING TV RECEIVER
3980. PI 88000856 SOUND TRAP CIRCUIT FOR MULTIPLEX BROADCASTING TV RECEIVER