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 |
| 4174179 | Continuous feed holographic correlator for randomly oriented workpieces A method and apparatus to optically control mass produced articles by a holographic correlator. The articles are continuously moved through an input beam of the holographic correlator. The correlator employs a holographic filter having a plurality of Four... | 11/13/1979 |
