...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 |
| 5785330 | Trailer support wheel assembly A trailer support wheel assembly having a wishbone frame pivotally connected to the trailer frame at two rear mounting points and adjustably connected to the trailer frame at a single forward point. A resilient suspension assembly and spindle is contained... | 07/28/1998 |
| 4219213 | Spare wheel apparatus Apparatus for mounting a spare wheel on a tongue of a trailer including a wheel supporting hub, a first shaft extending from the rear of the wheel supporting hub, the shaft being rotatably carried within a first shaft supporting sleeve, a retainer for ret... | 08/26/1980 |