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Ken Olsen, chairman and founder of Digital Equipment Corporation ; 1977
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| Number | Title | Issue Date |
| 4689912 | Hand-held high-velocity grenade launcher A hand-held, single-shot grenade launcher including a receiver and attached stocks for both hands, a barrel slidable in the receiver, an assembly of Belleville springs for absorbing recoil and a breech connected to the end of the barrel. A grenade round i... | 09/01/1987 |
| 4579037 | Machine pistol with retarded blowback A machine pistol with means for retarding blowback of the slide assembly. The device has both right hand and left hand stocks to enable the weapon to be fired from a comfortable visual sighting position at eye level with the wrist axes perpendicular to on... | 04/01/1986 |