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 |
| 4322996 | Alternating repeat keying signal generator A circuit for generating alternating repeat keying signals in an electronic keyboard musical instrument includes a clock, a logic circuit responsive to the keys of the instrument and to the clock for producing an alternating sequence of logic signals corr... | 04/06/1982 |
| 4182212 | Method of and apparatus for automatically playing arpeggio in electronic musical instrument An electronic musical instrument including key switches which are connected in a matrix of twelve note lines times six octave lines. The note lines are scanned cyclically at a high speed and the octave lines are detected one by one cyclically to determine... | 01/08/1980 |
