...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 |
| 7348989 | Preparing digital images for display utilizing view-dependent texturing A computer program embodied on a computer-readable medium, a computer readable medium storing computer-executable instructions, and a computer data signal embodied in a carrier wave, all for providing a graphic image utilizing view-dependent texture data, including ... | 03/25/2008 |
| 6196773 | Tool with control of a fluid axis using reference information from other tool axes A tool with a fluid axis wherein the fluid axis is controlled based on reference information from other tool axes, such as positional information relating to other tool axes. The reference information may be directly measured or may be determined from a c... | 03/06/2001 |