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 |
| 7347906 | Variable output and dial-a-yield explosive charges The invention, as embodied herein, comprises a variable yield warhead comprising an inner core of cylindrically-shaped, explosive material surrounded by an outer annulus of a different explosive material. The inner core explosive material has a heat of combustion co... | 03/25/2008 |
| 7197843 | Electronic ignition system for a firearm Electronic ignition systems which are designed for use with personal firearms utilizing black powder (or black powder substitutes) such as shotguns, rifles, and pistols. Generally, the firearms will be of the type classified as muzzleloaders. The electronic ignition... | 04/03/2007 |
| 6969434 | Castable thermobaric explosive formulations The invention disclosed herein relates to an explosive capable of enhanced combustion efficiently capable of sustaining a high pressure over a period of time in a confined environment, such as an air tight room or a cave, where oxygen may be in limited supply. An em... | 11/29/2005 |
| 6955732 | Advanced thermobaric explosive compositions The invention disclosed herein relates to an explosive capable of enhanced combustion efficiently capable of sustaining a high pressure over a period of time in a confined environment, such as an air tight room or a cave, where oxygen may be in limited supply. An em... | 10/18/2005 |
| 6502513 | Tablet form of gas generant A gas generant material body in the form of a tablet having a triangular cross section and associated methods of gas generation are provided.... | 01/07/2003 |
| 6354218 | Propellant for large-caliber ammunition A propellant system for launching a large-caliber projectile includes a propellant having at least three partial charges. The first partial charge is adapted to acceleration requirements of the projectile; the second partial charge has a higher combustion... | 03/12/2002 |
| 6352029 | Thermally actuated release mechanism This invention relates to explosive charges in which the chemical and physical composition changes gradually from point to point in order to accomplish differing, specific design objectives. More specifically, the invention relates to an explosive compris... | 03/05/2002 |
| 6334394 | Propellant charge arrangement for barrel-weapons or ballistic drives A propellant charge arrangement for barrel-weapons or ballistic drives comprises a conventional core charge having an ignition system and a consolidated propellant surrounding the core charge and having its own high electrical energy ignition system which... | 01/01/2002 |
| 5996501 | Blast and fragmentation enhancing explosive A dual explosive charge is described that simultaneously enhances blast and fragmentation characteristics of the charge, including an inner driven charge of a non-ideal explosive surrounded by an outer charge sleeve of a more nearly ideal explosive, deton... | 12/07/1999 |
| 5054399 | Bomb or ordnance with internal shock attenuation barrier An ordnance or munition casing is described which comprises a hollow outer casing having a shock attenuating inner liner made from successive layers of material of inwardly decreasing acoustic impedance. The inner liner reduces the sensitivity of the muni... | 10/08/1991 |
| 4876962 | Propellant charge for cannons and a method of producing such a charge The disclosure relates to a propellant charge for cannons comprising bundles (11) of tightly held tubular propellant sticks which are provided with connections between the propellant sticks' outer surfaces and their combustion channels, these connections ... | 10/31/1989 |
| 4698107 | Gas generating material Structure for generating nitrogen gas for inflating an air bag vehicle occupant restraint comprises a grain made of an azide based material which generates gas upon combustion. The grain has an ignition enhancing coating thereon consisting essentially of ... | 10/06/1987 |
| 4625648 | Projectile propelling charge and method of manufacture thereof A propellant charge and method of manufacture thereof by which the increase in maximum gas pressure within the upper use temperature range which occurs upon firing can be influenced until eliminated. The propellant charge is manufactured by compacting a f... | 12/02/1986 |
| 4466352 | Dual-mode propellant charge with a trumpet-shaped channel possessing a star-shaped cross-section Propellant charge, the combustion of which takes place according to at least two thrust modes, and which makes it possible to obtain at least one acceleration phase and one cruising phase of the self-propelled device equipped with this charge. The propell... | 08/21/1984 |
| 4424086 | Pyrotechnic compositions for severing conduits A stacked load of gas-forming pyrotechnic fuel pellets comprising metal, metal oxide and PTFE in varying amounts for use in apparatus for severing conduits in high pressure environments.... | 01/03/1984 |
| 4391337 | High-velocity jet and propellant fracture device for gas and oil well production An integrated jet perforation and controlled propellant fracture device and method for enhancing production in oil or gas wells, wherein the device is inserted in a well bore to the level of a geological production structure; the fracturing device being c... | 07/05/1983 |
| 4381270 | Method of producing a flash suppressed pressed rocket propellant A method of producing pressed rocket propellant with good flash suppression and a high burning velocity, i.e. containing optimal quantities of flash reducing agent and catalysts. The meethod is characterized by the entire quantity of flash reducing agent ... | 04/26/1983 |
| 4353301 | Smoke grenade A smoke grenade for providing screening. A container has in the lower portion thereof a discharge composition ignited by a primer composition for igniting an ignition/bursting composition which in turn ignites a set of easily ignitable smoke charges, pref... | 10/12/1982 |
| 4331081 | Explosive booster An explosive booster is provided for the detonation of insensitive blasting agents. The booster contains TNT as the sole explosive ingredient, is sensitive to blasting cap initiation yet remains insensitive to impact initiation. The booster comprises an e... | 05/25/1982 |