...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 |
| 6185862 | Capturing device for insects A device for manually capturing and restraining intended insects, the same comprising a pad of stacked, singular sheets each sheet having a partial enveloping means comprised of hydrophillic absorbing material and collapsible sheet construction whereby th... | 02/13/2001 |