In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 6247408 | System for sympathetic detonation of explosives A system is disclosed that remotely activates one or more explosive charge by sympathetic detonation (i.e., not requiring explosives to be interconnected by wire). The system includes electronics that control the activation of each explosive charge and wh... | 06/19/2001 |
| 5932834 | Auto-destruct fuze The Auto-destruct fuze is a mechanism that provides a primary mode detona and a delayed auto-destruct/self-neutralize mode detonator function for a grenade or similar munition. The mechanics for the primary mode detonation is similar to the M223 fuze whi... | 08/03/1999 |
| 5635667 | Fuse plug pyrotechnic firing device A fuse plug pyrotechnic firing device includes a body, a pyrotechnic train, firing pin and a driving device. The body has an axis and a bore disposed along the axis. The pyrotechnic train is disposed along the axis and includes an upper part and a lower p... | 06/03/1997 |
| 5612505 | Dual mode warhead A dual mode warhead is provided for use against both soft and hard targets nd capable of sensing which type of target has been struck comprising a casing made of a ductile material containing an explosive charge and a fuze assembly. The ductile warhead cas... | 03/18/1997 |
| 4739706 | Fuse for projectile A fuse comprises a cap carrying a rotor mounted in a rotatable fashion on a body with the help of a shaft and rotatable from an inactive position to an active position. A timer with an escapement permits the braking of the rotation of the rotor and has a ... | 04/26/1988 |
| 4729316 | Projectile containing a pyrotechnic charge and means for delayed initiation of the charge A projectile comprises a pyrotechnic charge and a mobile member inside the projectile which rotates between a safe position and an armed position. At least part of a pyrotechnic delay device is accommodated in a passage in this mobile member. The pyrotech... | 03/08/1988 |
| 4693180 | Impact detonator with a detonator cap An impact or percussion detonator including a detonator cap which is piercable by a striker or firing pin actuated by a spring force from the rear end of the detonator, including a mechanical retarding or delay arrangement incorporating blocking members w... | 09/15/1987 |
| 4341159 | Retard sensing double release safe separation munition timer A safing and arming timer being responsive to sequentially sampled deceleration forces to operate in one of a non-retard or retard mode wherein different non-retard and retard safe separation times may be predetermined and sequential outputs are available... | 07/27/1982 |
| 3978798 | Fuze mechanism having integrated safety functions A fuze mechanism for projectiles and the like is provided with a number of integrated safety catches which must be successively released before the fuze may be detonated. A firing pin lock cannot be released until the fuzing time has first been set. Relea... | 09/07/1976 |