...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 |
| 7445880 | Lithium salt of polyacetylene as radiation sensitive filaments and preparation and use thereof This invention relates to photochromic filaments composed of the lithium salt of a conjugated, polymerizable polyacetylene having a carboxylic acid or carboxylate terminal group wherein the length to width ratio of said filaments is between about 5000:1 and about 5:... | 11/04/2008 |
| 7411012 | Plasticized PVC compositions A stable, plasticized composition of PVC polymer including a C4-C30 linear, branched or cyclo-alkyl pyrrolidone present in an amount of 5-400 phr sufficient to plasticize said PVC into a flexible state. ... | 08/12/2008 |