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 |
| 5815857 | Sofa-bed A sofa-bed (1) is disclosed which comprises a fixed carrying structure (2), at least three movable frames (6, 7, 8) in engagement with each other in a consecutive rotatable manner and shiftable between a closed position and an open position, a kinematic d... | 10/06/1998 |
