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Patent Protection Ended

No. Patent No. Title
13041. PI 94001956 AN OPTICAL PICKUP APPARATUS FOR A MAGNETO-OPTICAL RECORDING MEDIUM
13042. PI 94001957 BALL JOINT
13043. PI 94001960 REFUSE COLLECTION VEHICLE
13044. PI 94001962 SKIRT AND SHORTS
13045. PI 94001965 A SHEET-LIKE ARTICLE SORT-OUT APPARATUS
13046. PI 94001966 WEB MATERIALS EXHIBITING ELASTIC-LIKE BEHAVIOR
13047. PI 94001970 ABSORBABLE COMPOSITE MATERIALS FOR USE IN THE TREATMENT OF PERIODONTAL DISEASE.
13048. PI 94001971 LIGHTER WITH GUARD
13049. PI 94001972 DIGITAL DATA TRANSMISSION METHOD AND APPARATUS FOR TRANSMITTING DIGITAL DATA AT A HIGH EFFICIENCY
13050. PI 94001974 PROCESS FOR TREATMENT OF SODIUM HYDROXIDE WASTE LIQUOR CONTAINING ALUMINUM
13051. PI 94001975 HYDRAULIC GAS COMPRESSOR
13052. PI 94001983 LOW SMOLE LUBRICATING COMPOSITION FOR TWO-PHASE ENGINES
13053. PI 94001984 RECORDING APPARATUS
13054. PI 94001988 OPIOID DIARYLMETHYLPIPERAZINES AND PIPERIDINES
13055. PI 94001989 FRACTIONATION OF TRIGLYERIDE OILS.
13056. PI 94001991 A PIPE SEAL WITH A SHEET-METAL CASING BENDABLE AROUND A PIPE.
13057. PI 94001992 SOLID SHEARED POLYMER BLENDS AND PROCESS FOR THEIR PREPARATION.
13058. PI 94001996 PROPULSION SYSTEM FOR A LIGHTER-THAN-AIR VEHICLE
13059. PI 94001997 RING ROLLER MILL
13060. PI 94001999 AGRICULTURAL CHEMICAL COMPOSITION.