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 |
| 5009902 | Conical taco shell A fried and crispy conically shaped taco-shell made from a heart shaped flat tortilla bent along a vertical axis to form a conical shell so as to present an overlapping portion of its edge and almost closed pike. It may optionally be held inside a wet-pro... | 04/23/1991 |
| 4987712 | Brick cladding assembly A brick cladding assembly including a metal strip from which there is punched a plurality of mounting flanges, the mounting flanges receive "brick" tiles which have side slots which receive the mounting flanges in order to secure the tiles to the mounting... | 01/29/1991 |
| 4880109 | Chain hauled conveyor belt A chain-hauled conveyor belt has been described, with a conveyor belt resting on rollers, a link chain, a drive unit and a conveyor belt returning apparatus. Essentially, the conveyor belt is characterized in that the drive consists of a motor (M), a redu... | 11/14/1989 |
