...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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| Application No. | Application Title | Issue Date |
| 20090007516 | BUILDING EXTERIOR PANELS AND METHOD Exterior building siding for aesthetic and protection of the building against wind, rain and solar energy that includes attaching each horizontal plank from the top of the wall downwardly that includes a starting strip where each plank is interlocked to the plank above ... | 01/08/2009 |
| 20080141609 | PRE-ASSEMBLED SHINGLE SET AND INSTALLATION SYSTEM An assembly, and method for constructing the assembly, to aid in the proper installation of shingles by providing panels of shingles and assembly guides that when followed, result in the installation of shingles that meet keyway width requirements, keyway alignment requ... | 06/19/2008 |