...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 |
| 7345315 | Gallium nitride based light-emitting device A manufacturing method and a thus produced light-emitting structure for a white colored light-emitting device (LED) and the LED itself are disclosed. The white colored LED includes a resonant cavity structure, producing and mixing lights which may mix into a white c... | 03/18/2008 |
| 7279347 | Method for manufacturing a light-emitting structure of a light-emitting device (LED) A method for manufacturing a light-emitting structure of a light-emitting device (LED) is disclosed. The white colored LED includes a resonant cavity structure, producing and mixing lights which may mix into a white colored light in the resonant cavity structure, so... | 10/09/2007 |
| 6992331 | Gallium nitride based compound semiconductor light-emitting device Disclosed are a GaN based compound semiconductor light emitting diode (LED) and a manufacturing method therefor. In the LED, a combination of a light extraction layer and an adaptive layer is formed over a multi-layer epitaxial structure,wherein the light extraction... | 01/31/2006 |
| 6933160 | Method for manufacturing of a vertical light emitting device structure Disclosed are a vertical GaN based light-emitting device (LED) structure and the manufacturing method thereof. In the structure and the corresponding method, a substrate unit having a mask is used to form a multi-layer epitaxial structure and the substrate and the m... | 08/23/2005 |