Patent Protection Ended
| No. | Patent No. | Title |
| 4741. | PI 89000311 | A METHOD OF OXIDIZING AN OXIDIZABLE CHARGE IN THE GAS PHASE AND A REACTOR FOR IMPLEMENTING THIS METHOD. |
| 4742. | PI 89000312 | ELECTROMAGNETIC CLUTCH HAVING A STRUCTURE FOR REDUCING IMPACT NOISE |
| 4743. | PI 89000313 | ELECTROMAGNETIC CLUTCH WITH A STRUCTURE WHICH IS SIMPLE IN ASSEMBLY. |
| 4744. | PI 89000314 | LAMINATED BOARD FOR TESTING ELECTRONIC COMPONENTS |
| 4745. | PI 89000315 | RESERVOIR FOR CONTROLLED ACTIVE SUBSTANCE DELIVERY, APPARATUS CONTAINING THE SAME, AS WELL AS METHOD FOR ITS MANUFACTURE AND USE OF THE APPARATUS. |
| 4746. | PI 89000322 | GLOVE HAVING IMPROVED CUFF SECURING FEATURES . |
| 4747. | PI 89000324 | BEDCLOTH. |
| 4748. | PI 89000325 | MEMORY RETENTION SYSTEM FOR VOLATILE MEMORY DEVICES. |
| 4749. | PI 89000326 | METHOD AND APPARATUS FOR COMPLETING A NON-VERTICAL PORTION OF A SUBTERRANEAN WELL BORE. |
| 4750. | PI 89000327 | ADHESIVE SHEET. |
| 4751. | PI 89000329 | METHOD FOR CONTROLLING THE DEFROSTING OF REFRIGERATOR- FREEZER UNITS OF VARYING DEGREES OF FROST ACCUMULATION. |
| 4752. | PI 89000330 | LIQUID HERBICIDAL AGENTS. |
| 4753. | PI 89000331 | IMPROVED MULTIPLE SLIVER ABSORBENT PRODUCT. |
| 4754. | PI 89000332 | PHENOL SUBSTITUTED GEM-DIPHOSPHONATE DERIVATIVES, PROCESS FOR THEIR PREPARATION AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM. |
| 4755. | PI 89000333 | COLD PRESERVING CONTAINER. |
| 4756. | PI 89000334 | TAPE RECORDER. |
| 4757. | PI 89000336 | COMPOSITION INDUCING A BINDING. |
| 4758. | PI 89000337 | FLUID DECONTAMINATION SYSTEM. |
| 4759. | PI 89000338 | CONTROLLED RELEASE PHARMACEUTICAL PREPARATION AND METHOD FOR PRODUCING THE SAME. |
| 4760. | PI 89000339 | THERMAL PRICE TAG PRINTER THERMAL HEAD SUPPORT STRUCTURE |
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