Did You Know...
...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 5434350 | Drum and percussion synthesizer A percussion synthesizer comprising a generally triangular body with a triangular upper surface upon which a plurality of piezoelectric transducers are mounted. Side surfaces adjacent the top surface and intersecting same at angles between 180 and 270 deg... | 07/18/1995 |
