...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 |
| 6915923 | Coupon dispenser An improved coupon dispenser is disclosed comprising a rigid housing assembly that includes a front cover and a mating rear housing section engaged together to provide a storage chamber for a stack of folded coupon sheets. The front cover is provided with a rounded ... | 07/12/2005 |