...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 |
| 6859668 | Structured system for monitoring and controlling the engineering equipment of an installation The present inventions pertains to the field of automatic control systems based on computer technology, and essentially relates to a structured system for monitoring and controlling the engineering equipment in an installation, mainly a building comprising several f... | 02/22/2005 |