Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 6119500 | Inverse symmetrical variable crown roll and associated method The method and apparatus of the present invention is a rolling mill having rolls with inverse symmetrical profiles and a method of using the same. An inverse symmetrical profile is a profile in which the right and left sides of a roll, with respect to the... | 09/19/2000 |
| 6036485 | Annealing furnace The method and apparatus is directed toward an annealing furnace and a method of using the same where the annealing furnaces includes a layer forming apparatus suitable to create layers of metal product; an insulated housing having an interior cavity form... | 03/14/2000 |
