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 |
| 4390073 | Blood collection bag weighing device A blood collection bag is suspended from a leaf spring, which leaf spring, on being repositioned a specified distance by the weight of a properly filled blood collection bag, energizes an electrical circuit. The electrical circuit generates a pulse to mom... | 06/28/1983 |
| 4180136 | Weight actuated feed drop apparatus A weight actuated dispensing mechanism including a bracket adapted to be attached to a conveyor system and having an inlet opening therein for receiving material from the conveyor system, and an outlet opening for allowing the material to exit from the br... | 12/25/1979 |
