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 |
| 7252503 | Wind-proof venturi tube A venturi tube has a configuration of baffles affixed thereto that serve to greatly reduce the susceptibility of a gas burning appliance to wind gusts. The baffles cooperate to force incoming primary combustion air through a circuitous route before introduction into... | 08/07/2007 |
| 6485290 | Portable lantern A lantern having a compact configuration. The lantern has a generally cylindrical shape with a lower housing containing a fuel tank, a shut-off valve and a regulator. A cap at the base of the lower housing can be removed, providing access to the fuel tank... | 11/26/2002 |
| 5902100 | Gas lantern with ignition system A automatic ignition gas lantern includes baffle positioned near the outside of a mantle, so that gas flowing out of the mantle will be disturbed by the baffle. This sets up a region with a fuel/air mixture that can be easily and reliably ignited. A spark... | 05/11/1999 |
| 4881893 | Metallic lantern mantle A metallic lantern mantle is set forth for use particularly in combination with camp-type lanterns utilizing a propane or gasoline-type fuel. The mantle is of a gauge to increase intermal pressure within the mantle volume and enhance luminescent qualities... | 11/21/1989 |
| 3941554 | Combination lantern, regulator-valve, and high pressure propane cylinder A combination propane lantern, pressure regulator-valve, and pressurized propane fuel container in which the lantern is supported by the regulator-valve and the propane container, and the rate at which fuel is delivered to the lantern remains substantiall... | 03/02/1976 |
