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Patent Protection Ended

No. Patent No. Title
5141. PI 89000917 AUTOMATIC VARIABLE, PITCH MARINE PROPELLER.
5142. PI 89000918 PROCESSES FOR THE PREPARATION OF MORNIFLUMATE AND ANALOGOUS COMPOUNDS.
5143. PI 89000919 THAZ DERIVATIVES FOR ENHANCEMENT OF CEREBRAL FUNCTION.
5144. PI 89000921 A PROCESS FOR THE DEHYDROGENATION OF ALIPHATIC 1,2- DIOLS.
5145. PI 89000922 CERAMIC SEMICONDUCTOR PACKAGE HAVING CRACK ARRESTOR PATTERNS.
5146. PI 89000923 CAMERA APPARATUS FOR ADVANCING A FILM LEADER FROM A FILM CASSETTE.
5147. PI 89000926 PRESERVING AGENTS FOR WOOD AND THEIR APPLICATION.
5148. PI 89000927 COAXIAL CONNECTOR IN A HOUSING BLOCK.
5149. PI 89000932 METHOD FOR STIMULATING PLANT GROWTH USING SYNTHETICALLY PRODUCED 9-BETA-L(+) ADENOSINE.
5150. PI 89000936 MARINE SEISMIC SOURCE FRAME.
5151. PI 89000937 COMPLEMENTARY METAL-OXIDE-SEMICONDUCTOR TRANSISTOR AND ONE-CAPACITOR DYNAMIC-RANDOM-ACCESS MEMORY CELL AND FABRICATION PROCESS THEREFOR.
5152. PI 89000938 METHOD AND APPARATUS FOR CONDITIONING THE FREEZING ZONE LIQUID REEDSTREAM IN THE CRYOGENIC SEPARATION OF CARBON DIOXIDE AND OTHER ACID GASES FROM METHANE BY THE USE OF DISTILLATION AND A CONTROLLED FREEZING ZONE
5153. PI 89000939 SELF-CENTERING ELECTRODE FOR POWER DEVICES.
5154. PI 89000940 PHARMACEUTICAL COMPOSITION FOR THE PREVENTION OF SEXUALLY TRANSMITTED DISEASES.
5155. PI 89000944 BLOCK-FORMED REVETMENT SYSTEM FOR CONTROLLING SOIL EROSION.
5156. PI 89000945 ELECTROACOUSTIC TRANSDUCER.
5157. PI 89000948 RECORDING SYSTEM.
5158. PI 89000950 THERAPEUTIC COMPOUNDS.
5159. PI 89000951 CONTAINER FOR A NUMBER OF PACKAGED CONTACT LENSES.
5160. PI 89000953 COATING COMPOSITIONS AND POLYANHYDRIDES FOR USE THEREIN