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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Application No. | Application Title | Issue Date |
| 20090209183 | ROLL GRINDING APPARATUS A roll grinding apparatus includes a clamping device, a grinding wheel, a first driver, and a second driver. The clamping device includes a base, a support connected with the base and being movable relative to the base, a first clamping member and a second clamping memb... | 08/20/2009 |
| 20050136815 | POLISHING JIG FOR BEARING FOR USE IN BACK-UP ROLL OF ROLLING MILL A polishing jig of a hydraulic integral system is improved to increase efficiency. A polishing jig 1 for bearing for use in back-up roll of rolling mill including a shaft member 2 on which an inner ring 104 of a bearing 100 for use in back-up... | 06/23/2005 |
