...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 |
| 5544595 | Security hinge for gaming device A hinge arrangement for a gaming device includes a hinge pivotally connecting a cabinet access door to a cabinet. The cabinet access door and the cabinet form a gap therebetween adjacent the hinge when the cabinet access door is closed, but the hinge form... | 08/13/1996 |