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 |
| 5123440 | Slide valve A slide valve for use in applications where gated fluid temperatures may exceed approximately 1600° F. and exterior valve wall temperatures may be less than approxiamtely 600° F. connects the valve bed plate to the valve body by use of a ring of conical... | 06/23/1992 |
