...that on Dec. 15, 1836, the Patent Office was completely destroyed by fire? Lost were some 7,000 models, 9,000 drawings, and 230 books plus all records of patent applications and grants.
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| Number | Title | Issue Date |
| 6958496 | Light-emitting semiconductor device having enhanced brightness This invention this invention provides a light-emitting semiconductor device having enhanced brightness, to ensure even current distribution emitted by a front contact of the light emitting diodes so as to improve the light-emitting efficiency of the active layer. T... | 10/25/2005 |