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 |
| 6363879 | Fan speed indicator A ceiling fan speed indicator having a detectable feature by which fan speed may be quickly ascertained by one of the human senses.... | 04/02/2002 |
| 4507549 | Odometer reset mechanism A reset mechanism for an odometer is provided. The reset mechanism operates by means of manually rotatable structure which causes rotation of a reset shaft provided in an odometer. Means are provided for permitting manual rotation of the odometer reset sh... | 03/26/1985 |
| 4009370 | Counting or indicating ring device A counting or indicating ring device has indicating rings which are respectively provided with numerals or marks on a pitch circle thereof and are supported by a shaft, step advancing means spaced adjacent to one of the indicating rings to advance it step... | 02/22/1977 |
