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Patent Protection Ended

No. Patent No. Title
7121. PI 90000990 MAGNETIC TAPE APPARATUS WITH A MAGNETIC HEAD
7122. PI 90000991 VESSEL PROSTHESIS IMPREGNATED WITH CROSSLINKED GELATIN AND PROCESS FOR THE PRODUCTION THEREOF.
7123. PI 90000992 FET COMPARATOR CIRCUITRY
7124. PI 90000995 ISOPARAFFIN-OLEFIN ALKYLATION PROCESS.
7125. PI 90000998 VIDEO CAMERA HAVING GRIP CONSTITUTED BY BATTERY.
7126. PI 90001000 REFRIGERANT COMPOSITION.
7127. PI 90001001 BALL JOINT.
7128. PI 90001002 CHARACTERISTICS INSPECTING DEVICE FOR CATHODE RAY TUBE.
7129. PI 90001003 ATTACHING-DETACHING DEVICE FOR SHADOW MASK FRAME ASSEMBLY OF CATHODE RAY TUBE.
7130. PI 90001005 N-PHENYLPYRAZOLE DERIVATIVES.
7131. PI 90001006 N-PHENYLPYRAZOLE DERIVATIVES.
7132. PI 90001007 MARINE SEISMIC REFLECTION GEOPHYSICAL SURVEYING .
7133. PI 90001008 SLIDE FASTENER LOCK ASSEMBLY.
7134. PI 90001012 FLASHLIGHT HOLDER CLAMP ASSEMBLY.
7135. PI 90001014 METHOD AND APPARATUS FOR THE PYROLYSIS OF WOOD WITH BY-PRODUCT RECOVERY.
7136. PI 90001015 UNLOADING SYSTEM FOR TWO-STAGE COMPRESSORS.
7137. PI 90001016 CAMBERED CONDENSER GRILL.
7138. PI 90001018 WEIGHT ROLLER.
7139. PI 90001020 STYRENE-BASED RESIN COMPOSITION.
7140. PI 90001027 LIQUID DISHWASHING DETERGENT COMPOSITION.