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 |
| 7052203 | Surfacing structure for traffic areas and for surfaces of structures The invention relates to a surfacing structure for traffic areas and for surfaces of structures, which has a substructure located on the base of the surfacing and has a superstructure, which covers the latter and is comprised, at least in part, of concrete, sepecial... | 05/30/2006 |
