...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 |
| 6685245 | Truck grille guard mounting bracket A truck grille guard mounting bracket consisting of a first laterally elongated clevis having front and rear arms, the front arm being adapted for fixed attachment to a truck bumper, the rear arm being adapted for fixed attachment to truck spring hangers,... | 02/03/2004 |