...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 |
| 7114290 | Vehicle actuated gate opening/closing system A gate opening system which includes a barrier and a barrier mounting adapted to mount the barrier in an open or closed condition, a retention device to secure the barrier in an open or closed condition, a drive element, and an energy transmission system, whereby en... | 10/03/2006 |
| 6968645 | Sliding service window In accordance with one embodiment of the present invention, a sliding, bi-parting, service window may be operated by pressing on a push operator. In response to such push operation, a pair of bi-parting windows may be caused to slide apart sufficiently to provide a ... | 11/29/2005 |
| 6789537 | Foot operated grill cover lift A device for foot operation of the cover of a cooking instrument, such as a barbecue grill, includes a lever located so as to be operated by a foot, a lift support attached to the cover of the cooking instrument and a linkage connecting the foot operated lever and t... | 09/14/2004 |
| 6581587 | Apparatus for opening grill cover An apparatus for opening an outdoor grill cover using an activation device and an opening mechanism. The activation device is attached to one end of the opening mechanism, and the activation device is positioned such that a grill user can access it. The o... | 06/24/2003 |