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A gun that fires a missile, powered by gas "discharged by the operator of the toy."
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| Number | Title | Issue Date |
| 4864494 | Software usage authorization system with key for decrypting/re-encrypting/re-transmitting moving target security codes from protected software A computer based function control system is particularly suited for use as a software security device on the highly popular personal computers or a micro-processor driven function. The system includes an encrypted security message uniquely encoded at pred... | 09/05/1989 |
