Did You Know...
...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 4096350 | Connection structure for coaxial cable A connective structure for joining coaxial cables in which the ends of the cable inner conductors which are to be connected together are provided with threading for screwing-on connective sleeves having a mating inner threading.... | 06/20/1978 |
| 4083135 | Flexible connecting arrangement for suction dredgers A dredging pipe assembly includes at least two rigid sections physically connected together by a cardan joint and connected for fluid continuity by a pair of flexible sections disposed in spaced apart relation with the cardan joint between them. A flexibl... | 04/11/1978 |
| 4035002 | Pipe coupling A coupling for unthreaded pipes of a sprinkler system, which permits the replacement of a small damaged pipe section without bending the pipes already emplaced in the ground. One coupling includes an end cap that can be installed on the end of a first pip... | 07/12/1977 |
| 3968654 | Underground drain pipe coupling A coupling for joining lengths of underground drainage pipe without inhibiting the flow of water into or along the pipe.... | 07/13/1976 |
| 3944265 | Exhaust system connector seal A method and apparatus for joining two tubular members in a strong, leak-proof fashion in which a band of ductile metal is passed around the adjacent ends of the members and circumferentially stressed beyond its elastic limit to conform intimately with th... | 03/16/1976 |
| 3937923 | Electric cartridge heater with metal sleeve adapter Cartridge heaters are most frequently used for heating metal parts by insertion into bores in such parts. Such heaters are manufactured in various diameters to closely fit within complementary bores to provide heat according to required specifications. My... | 02/10/1976 |
| 3934902 | Connector for a corrugated conduit A connector for use with a plastic corrugated tubing is provided in which a first annular member is provided with an end face which is adjacent a projecting end of the tube when the annular member is disposed about the tube. The end face is disposed withi... | 01/27/1976 |
