Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 6234058 | Semiautomatic pocket gun and ammunition Semiautomatic pistol which is small enough to be carried in a pocket or otherwise concealed on the body of a person, and caseless ammunition for use in the pistol. The pistol has a grip adapted to be held in the hand of a shooter, a barrel extending in a ... | 05/22/2001 |
| 5939657 | Semiautomatic pistol and ammunition Semiautomatic pistol and ammunition in which the pistol has a grip adapted to be held in the hand of a shooter, a barrel extending in a forward direction from the grip, a magazine of cartridges positioned above the barrel, and an action located within the... | 08/17/1999 |
| 4825743 | Magazine and feed mechanism for firearms An improved magazine and feed mechanism is disclosed for firearms which provides a transfer disc for receiving cartridges laterally with respect to the barrel of the firearm such as to be rotatable to orient the cartridge longitudinally with respect to th... | 05/02/1989 |
| 4603615 | Liquid propellant weapon system This invention has the provision of a liquid propellant gun having an annular piston whose head is formed of nested rings to provide a relatively high rate of flow from the aft face of the head to the forward face of the head.... | 08/05/1986 |
| 4348941 | Shoulder arm with swivel breech member A shoulder arm, especially a rifle, having a barrel, a recess, which is perpendicular to the axis of the barrel, formed in a member which is fixedly connected with the barrel, and a roller-shaped breech member coaxially arranged in the recess and capable ... | 09/14/1982 |
| 4152857 | Means for loading small firearms including a box magazine and cartridge clips The invention relates to a loading arrangement for handfire-arms, in particular automatic rifles for firing caseless ammunition, comprising a magazine and a cartridge clip adapted to it. The cartridge clip retains the cartridges by two resilient tongues a... | 05/08/1979 |
| 4004363 | Rotatable cartridge chamber for firearm type weapon A rotatable cartridge chamber for a firearm type weapon in which the chamber is rotatable in the weapon at the rear end of the barrel and has cartridge chambers therein. The chamber receives cartridges from a magazine parallel to and adjacent the barrel i... | 01/25/1977 |
| 3997994 | Shoulder arm with swivel breech member A shoulder arm, such as a rifle, having a breech member which can be swivelled about an axis which is perpendicular to the axis of the barrel for loading the breech member contains a firing chamber which is in alignment with the barrel in is firing positi... | 12/21/1976 |
