...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 |
| 7191965 | Material spreader and method for using same A material spreader includes a belt/chain assembly. The belt is mounted within the chamber of the material spreader and the chain remains out of contact with the material during the operation of the device. A sliding barrier is mounted at the rear of the belt, and m... | 03/20/2007 |
| 7172137 | Material spreader and method for using same A material spreader includes a belt/chain assembly. The belt is mounted within the chamber of the material spreader and the chain remains out of contact with the material during the operation of the device. A sliding barrier is mounted at the rear of the belt, and m... | 02/06/2007 |
| 6540164 | Apparatus for spreading granular material, especially for the treatment of roads Apparatus for spreading a granular material comprises a conveyor designed to move the material from a hopper to a distributor. The conveyor comprises two endless cables mounted in parallel and each passing around two end pulleys, parallel transverse bars ... | 04/01/2003 |
| 6173917 | Granular material spreader A granular material spreader is adapted for towing behind a yard tractor. A frame upports an inverted cone which is sized to contain a supply of granular material for distribution. The bin sweep rod is carried adjacent to the inside surface of the cone, a... | 01/16/2001 |
| 6161784 | Apparatus for conditioning and dispensing a mixture of wet and dry loose fill insulation material An apparatus for conditioning and dispensing a mixture of wet and dry insulation material is provided. The apparatus includes a hopper with a partition disposed in the hopper so as to define a wet material receiving compartment and a dry material receivin... | 12/19/2000 |
| 4386719 | Constant feed apparatus A constant feed apparatus in which a straight tubular housing into which a material is fed has provided therein at least one rotary arm which rotates in the proximity of the bottom surface of the tubular housing, and at least one discharging port is provi... | 06/07/1983 |
| 4131237 | Spreading implements A spreading implement has laterally extending conveyors of different lengths that form a boom to each side of a hopper. At the outer ends of the conveyors, rotatable spreading discs are mounted spaced apart from one another and each conveyor is an endless... | 12/26/1978 |