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 |
| 3981179 | Fluid detecting system A system and method wherein a sample fluid in a reference carrier fluid stream is passed through a sample cell to a point of dilution and then through a reference cell, and a detector means indicates a characteristic of the sample fluid by simultaneously ... | 09/21/1976 |
| 3934456 | Solvent gradient generator for chromatography systems Solvent gradient generating apparatus in a liquid column chromatography system. A multi-compartment vessel having an input/output port pair for each compartment is coupled between a high pressure pump and the column cell for providing both gradient genera... | 01/27/1976 |
