Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 5207386 | Flow emitter units moulds for use in the manufacture thereof An emitter unit having an elongated flowduct. The flowduct comprises a central elongated control duct of substantially rectangular cross-sectional shape having a width a and two sets of successive like flow pockets located respectively on either side of t... | 05/04/1993 |
| 4573640 | Irrigation emitter unit An irrigation emitter unit comprises an elongated body member having formed in a first surface thereof an elongated groove formed with a pair of oppositely directed flow resisting substantially triangular baffles, the groove having an inlet end and an out... | 03/04/1986 |
| 4413786 | Emitter unit An emitter unit comprises a housing having defined therein an inlet and an outlet, a substantially planar inner wall portion of the unit having defined therein a groove, a recessed cavity communicating with one end of the groove and being of extended dime... | 11/08/1983 |
| 4384680 | Fluid flow regulator unit A fluid flow regulator unit comprising a hollow casing; means of defining inlet and outlet control chambers; flow connection means for flow connecting the inlet chamber to a fluid supply conduit; the casing having a surface containing an outlet aperture f... | 05/24/1983 |
| 4060200 | Drip level irrigation An emitter unit comprises a pair of casing components and a coupling for coupling said components together via an interposed strip that extends beyond the components on all sides and is adapted to form a closed conduit such that one component is inside th... | 11/29/1977 |
