A gun that fires a missile, powered by gas "discharged by the operator of the toy."
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| Number | Title | Issue Date |
| 7337674 | Pressure detector for fluid circuits A pressure measurement device usable for monitoring pressure of fluids such as blood, waste, and replacement fluid in a blood treatment system provides a reliable signal and other benefits by virtue of a number of features of the various embodiments disclosed. The p... | 03/04/2008 |