...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 |
| 7000372 | Method and system to control weeds A weed control system for a body of water which includes a weed contacting member suspendable within the body of water proximate a bed of weeds and a drive member for automatically moving the weed contacting member repeatedly over the bed of weeds such that the weed... | 02/21/2006 |
| 6622466 | Apparatus for landscaping around obstacles An apparatus suitable for using a landscape tool around an obstacle in association with a driver. The apparatus comprises: a frame adapted to operatively connect the apparatus to a transport device, a traveler, an open-centered support having a gap therei... | 09/23/2003 |
| 4689940 | Lawn and garden maintenance apparatus An apparatus for use in lawn and garden maintenance, in which a chassis having a pair of axially aligned and independently operable drive wheels carries a cultivator comprising a frame mounted on the chassis and movable pivotably in the vertical plane of ... | 09/01/1987 |