...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 |
| 5665309 | Device for agitating and for taking samples of blood products from tubes which are grouped together in racks A device for agitating and taking samples of blood products from tubes which are closed by stoppers and grouped together in a rack. The device includes a rack support adapted for holding at least one rack, at least one rack held by the rack support which ... | 09/09/1997 |
| 5578268 | Device for the transfer, agitation and sampling of blood products in tubes grouped in cassettes A device for transferring, agitating, and sampling blood products sealed in tubes which are grouped together in cassettes wherein each cassette containing sample tubes is extracted from a storage receptacle by a moving loading and ejection carriage which ... | 11/26/1996 |