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.
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| Number | Title | Issue Date |
| 6041762 | Control module for natural gas fuel supply for a vehicle The controls for controlling the supply of natural gas fuel for a vehicle are integrated together in a module which is located at the gas tank. Such controls include a high pressure regulator for lowering the pressure of the gas flowing from the tank and ... | 03/28/2000 |
| 5887799 | Dual fuel injector A dual fuel injector for an engine is selectively controlled to either inject a liquid fuel such as gasoline or a gaseous fuel such as butane or propane to the engine. The injection of one fuel or the other is effected by alternatively feeding a pulsating... | 03/30/1999 |
