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Patent Protection Ended

No. Patent No. Title
4721. PI 89000282 A PROCESS FOR THE PREPARATION OF SUPPORTED POLYMERIZA- TION CATALYST AND AN APPARATUS FOR USE IN THE PROCESS.
4722. PI 89000283 WATER PURIFICATION DEVICE WITH AN INTAKE FUNNEL.
4723. PI 89000284 METHOD DETECTING NUCLEOTIDE SEQUENCES.
4724. PI 89000285 A PROCESS FOR THE CONTINUOUS TRANSESTERIFICATION OF FATTY ACID LOWER ALKYL ESTERS.
4725. PI 89000287 RAPID ACCESS TELETEXT DECODER ARRANGEMENT.
4726. PI 89000288 A GHOST CANCELING CIRCUIT .
4727. PI 89000289 PROCESS FOR FORMING CONTERNER OF ACRYLONIRILE POLYMERS BY BIAXIAL-ORIENTATION BLOW-MOLDING PREFORM .
4728. PI 89000291 NEW USES OF 4-(3-PHOSPHONO-2-PROPENYL)-2-PIPERAZINE- CARBOXYLIC ACID.
4729. PI 89000292 PHARMACEUTICAL FORMULATIONS.
4730. PI 89000293 DENTURE CLEANING TABLET.
4731. PI 89000296 AZEOTROPE-LIKE COMPOSITIONS OF DICHLOROTRIFLUOROETHANE, METHANOL AND NITROMETHANE.
4732. PI 89000297 PROCESS FOR THE DISPERSION OF GROUP VIII METALS IN LARGE PORE ZEOLITE CATALYSTS.
4733. PI 89000298 PORTABLE, COLLAPSIBLE GAME TABLE.
4734. PI 89000300 PYRROLOQUINOLINE AND PYRROLOPHEMOTHIAZINE CARBOXAMIDES AND RELATED COMPOUNDS.
4735. PI 89000302 A SLEEVE OF PLASTIC SHEET MATERIAL FOR A CABLE TERMINATION, A CABLE SPLICE OR ANOTHER CABLE PORTION FREED FROM THE CABLE SHEET OF ELECTRICAL CABLES.
4736. PI 89000303 SYSTEM FOR STACKING VENEER SHEETS CONVEYED FROM TWO DIFFERENT DIRECTIONS.
4737. PI 89000304 THERAPEUTIC APPARATUS OF MAGNETIC FIELD GENERATOR.
4738. PI 89000305 REFRIGERATOR WITH EFFICIENT COLD ACCUMULATOR
4739. PI 89000308 SEPARABLE SLIDE FASTENER .
4740. PI 89000309 DYE COMPOSITION AND DETERGENT USE THEREOF