...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 |
| 4658275 | Image forming apparatus An image information signal is applied to an ion generator, which generates ions in accordance with the image information signal and extracts the ions to deposit them on one side of an image bearing member. An electric charge having the polarity opposite ... | 04/14/1987 |