...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 |
| 6997770 | Air pressure projectile launcher An air pressure projectile launcher toy comprising at lease one soft foam projectile and a telescopic tube assembly, adapted on one end for releasably securing a projectile, and capable of generating a high speed compressed air stream, which is buffered by a large a... | 02/14/2006 |
| 6799516 | Small aluminum “Fire Cup” used with a fire cracker, for entertainment purposes A reusable aluminum fire cup having a dome-shaped cap and including an ordinary fire cracker placed in a copper tube, then placed in a container with small amount of water, and then ignited, the fire cracker's blast and the pressure from the water will propel the fi... | 10/05/2004 |
| 6776684 | Fire crackler stick A launching device is disclosed which launches snap caps against a hard surface, such as a wall or ceiling, with sufficient force so as to “pop” the caps like tiny firecrackers. In one embodiment, the launcher simultaneously launches confetti into the air so as ... | 08/17/2004 |
| 3938272 | Toy cannon A toy cannon for firing a resilient projectile when a compressed fuel-air mixture is ignited. Air is compressed into a chamber containing fuel as the resilient projectile is forced into the barrel of the cannon. An ignitor in the chamber is actuated from ... | 02/17/1976 |