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 |
| 6453941 | Pipe tubular element comprising a rigid longitudinal portion and a flexible longitudinal part in one single piece A pipe element possessing a longitudinal axis (2) along which a rigid tubular part (3) and a flexible tubular part (4), together constituting a single piece, extend. The rigid part (3) has one end presenting a substantially radial connection surface (8) f... | 09/24/2002 |
| 5391110 | Exhaust gas discharge apparatus The apparatus is a device for removing vehicle exhaust gases from a building. A sealed duct is installed under the floor of a building, and the duct includes a structure for supporting and guiding a hose dolly, a part of which travels within the duct. A f... | 02/21/1995 |
| 5171046 | Assembly composed of hard member and soft tube for medical use An improved assembly, composed of a hard member and a soft tube fitted onto the hard member, for medical uses is formed with a plurality of projections on the side wall of a flange of the hard member. The projections project toward the soft tube side to f... | 12/15/1992 |
| 5060689 | Universal check valve assembly A check valve assembly is disclosed which is inserted in a fluid flow conduit leading from a source of fluid flow to a mechanism utilizing the fluid flow. The check valve assembly comprises a housing having an inlet port and an outlet port that communicat... | 10/29/1991 |
| 4843983 | Pneumatic manifold quick coupling A quick pneumatic coupling particularly well adapted for use in a folding agricultural planter comprises a rigid plastic funnel mounted to the end of a first conduit and a flexible and resilient rubber flange member mounted to a second conduit. The inner ... | 07/04/1989 |
