...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 |
| 7267250 | Closure with concertina element and processing means The invention provides in a first aspect a closure (10) for a passageway such as a bottleneck. The closure (10) has a concertina element (16). When the concertina element (16) is released, the closure (10) can be removed from the p... | 09/11/2007 |
| 6694916 | Timed food-filled toy dispenser A dispensing system (200) for chewable pet toys (100) contains multiple toys and dispenses them at intervals determined by one or more modes of operation. A display (220) and keypad (400) are used to enter programming data into the memory of a microproces... | 02/24/2004 |