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...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 7011328 | Transversely extending pivotal hitch mechanism Apparatus and method for applying temporary raised pavement markers (TRPM) to roadway surfaces comprises a conveyor upon a wheeled vehicle wherein an upstream end portion of the conveyor is able to extend, for example, over the rear bed portion of a roadwork vehicle... | 03/14/2006 |
| 5108250 | Material mover bed floor drive synchronization system and method A system and method for controlling an automatic loading/unloading material mover. The mover includes a wheeled vehicle having a tiltable bed with a live floor and a non-driven wheel and is used to load and unload heavy objects, such as cotton modules. Pu... | 04/28/1992 |
| 4903778 | Method for rolling sod with grass side out A sod harvester in which sod is cut, conveyed upwardly, and then travels downwardly over a floppy conveyor and falls into a roll forming enclosure formed by a bottom conveyor and a vertical conveyor. The floppy conveyor swings downwardly at the start of r... | 02/27/1990 |
| 4899829 | Apparatus for making a substrate for forest cultivation Apparatus for making a substrate for forest cultivation, which apparatus is designed to be drawn as a trailer behind a tractor or some comparable vehicle and most suitably has one wheel on each side of the trailer, the tracks of the wheels being essential... | 02/13/1990 |
| 4832130 | Sod harvester with conveyor structure A sod harvester in which sod is cut, conveyed upwardly, and then travels downwardly over a floppy conveyor and falls into a roll forming enclosure formed by a bottom conveyor and a vertical conveyor. The floppy conveyor swings downwardly at the start of r... | 05/23/1989 |
| 4174578 | Tracked snowplow A tracked snowplow particularly suited for use in very deep snow. A frame is carried on a tracked mover. The frame supports a triangular belt which is made up of a number of chains, stretched about rolls, and a large number of shovels which extend perpend... | 11/20/1979 |
| 4081094 | Conveyor-trailer for transporting an agricultural commodity A conveyor-trailer for transporting cotton, which is mounted on a long-bed truck trailer. The conveyor-trailer is pivotally mounted on the bed of the truck trailer and hydraulic means moves the conveyor-trailer between a horizontal position and a position... | 03/28/1978 |
