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 |
| 5082330 | Apparatus for removing floor covering An apparatus for removing floor covering which has a frame supported by wheels. Some of the wheels are used to drive the frame and these wheels are powered by a structurally independent power source. A blade secured in front of th eframe may be used to pu... | 01/21/1992 |
