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 |
| 5092942 | Method of repairing or modifying turbine blades A method of repairing or modifying a turbine blade wherein damage or erosion has occurred to the end part of a turbine blade or it is required to remove the end part so as to improve the efficiency of the blade as a whole comprises the steps of removing t... | 03/03/1992 |
| 5067234 | Turbine blade repair A method of repairing a turbine blade of the type having discontinuities such as lacing wire holes the method including the steps of driving a plug into any such discontinuity that is not in the immediate area that is likely to be subjected to considerati... | 11/26/1991 |
| 5062205 | Method of manufacture and repair of turbine blades A method of manufacturing or repairing a turbine blade includes inserting an insert into the leading edge portion of the blade situate particularly adjacent the radially outer end of the turbine blade. The insert is made of a material different from the p... | 11/05/1991 |
