...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 |
| 7090370 | Exterior luminaire An exterior luminaire comprising an array of light emitting diodes (2) within an outer body (12). Also within the outer body (12) is housed apparatus (7) for collecting and converting radiation into electrical energy so as to provide at l... | 08/15/2006 |