...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 |
| 7134227 | Adjustable wing plow A plow assembly includes a pair of plow wings which are pivotally mounted at opposite ends of a center plow. Each of the plow wings may pivot between a forwardly angled position and an aligned position. The plow assembly may pivot a trailing plow wing in response to... | 11/14/2006 |
| 6851486 | Grading attachment for a loader A grading attachment for a skid steer loader is provided with steerable wheels that are steered by an actuator. The blade of the grading attachment may be rotatable through 360 degrees by a motor and gear assembly. Actuators may be provided to raise, lower and tilt ... | 02/08/2005 |
| 5996706 | Grader circle and beam assembly A circle and beam assembly for a motor grader. The circle and beam assembly of the present invention includes a circle from which two beams extend wherein the beams are oppositely disposed. An opening is defined at the lower end of each beam. A hinge rod ... | 12/07/1999 |
| 5488788 | Groundworking attachments for an outrigger stabilizer pad Flexibility of operation is added to a vehicle (10) having a vehicle frame (12) with an operator area (18) and front and rear wheels (14), (16), a power tool (32), a pair of outrigger arms (48) pivoted to the frame (12) and hydraulic cylinders (62) extend... | 02/06/1996 |
| 3976146 | Grader A grader of the type including a longitudinal overlying boom connecting a front wheel assembly to a rear tractor unit with a blade carrier frame assembly positioned intermediate the front wheels assembly and the tractor unit. This grader is characterized ... | 08/24/1976 |