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 |
| 5839868 | Tearable retainer A tearable and disposable retainer for temporarily holding and positioning an apertured element such as a washer in place along the length of an elongated, generally cylindrical part. The retainer of the present invention includes a singular, generally pl... | 11/24/1998 |
| 5743454 | Method and apparatus for installing stakes in netting for growing turf A staple for maintaining netting in an installed position on a ground surface, which netting is used to enhance the growing of turf or sod. The staple has a pointed end and a medial portion extending to a distant end. The distant end has a head portion wh... | 04/28/1998 |
| 5639175 | Threaded paper tube A threaded paper tube includes a multiple paper tube having an inner tube with spiral ridges on its outer surface, and an outer tube and a tightening robe each having grooves on their inner surfaces which are in the same pitch as the spiral ridges. The to... | 06/17/1997 |
