Did You Know...
...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 |
| 5618016 | Swing linkage A linkage assembly includes a first link connected at a first point to a translation mechanism attached to a support structure. The translation mechanism is arranged to allow the first point of the first link to translate along a substantially straight ax... | 04/08/1997 |
| 5209446 | Rotary stand A rotary stand having a base and a turntable connected in a slidable manner at their respective circular faces by a connecting member inserted into an axis and a spacer which has a projection fitted to the outer periphery of the axis inserted into an elon... | 05/11/1993 |
