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 |
| 7248888 | Method and apparatus for interactive audience participation at a live entertainment event A method and apparatus provide interactive audience participation at live entertainment events. Enjoyment for a plurality of participants is enhanced. Participants employ wireless interactive devices that present a promotional message and include user input and outp... | 07/24/2007 |
