...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 |
| 7458199 | Mower attachment mechanism A mower attachment comprising an attachment housing and a plurality of blade assemblies. The attachment housing includes an upper surface and front and rear baffles extending downwardly from the upper surface, the front and rear baffles shaped to define a plurality ... | 12/02/2008 |
| 7062898 | Mower attachment mechanism A mower attachment comprising an attachment housing and a plurality of blade assemblies. The attachment housing includes an upper surface and front and rear baffles extending downwardly from the upper surface, the front and rear baffles shaped to define a plurality ... | 06/20/2006 |
| 6055798 | Locking mechanism for a rotatable shaft A cutter blade is pivotally attached to a blade carrier so that it may operate as a flail. The blade carrier itself rotates about a drive shaft spaced from the pivot axis. A pivot pin is received in respective bores of the cutter blade and the blade carri... | 05/02/2000 |
| 5660034 | Folding root crop defoliator A foldable root crop defoliator wherein the implement has a central frame with lateral wings pivotally attached to the central frame. The front end of the central frame is adjustably attached to a hitch for towing the defoliator. Plant top cutting and shr... | 08/26/1997 |