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 |
| 7489227 | Electrical receptacle with multiple heat sensors An electrical receptacle has multiple thermal sensors, each of which can trigger automatic shut off when the temperature rises above a predetermined threshold. After automatically turning off, the receptacle remains permanently non-conducting. ... | 02/10/2009 |
| 7385473 | One-shot heat sensing electrical receptacle An electrical receptacle senses its operating temperature and automatically turns off when the temperature rises above a predetermined threshold. The receptacle has a button that visually indicates when the receptacle has reached its temperature threshold. After aut... | 06/10/2008 |
