...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 |
| 7277289 | Resistor for controlling a fan motor rotating speed for use in an air conditioner Provided is a resistor for controlling a fan motor rotating speed for use in an air conditioner. The resistor comprises a base body, a radiator attached to a top portion of the base body, a printed resistor circuit board covered with insulating sheets and received w... | 10/02/2007 |
| 6924726 | Liquid-cooled high-power resistor A high-power resistor comprises a plurality of resistor elements (1), made of sheets of an electrically conductive resistance material, with a first (13) and a second (14) terminal. The resistor elements are mutually separated by disc-shaped ins... | 08/02/2005 |
| 6069553 | Blower speed control resistors for automotive or other service A layered electrical resistor having flat components stacked as follows: a first metal outer plate, a first thin outer electrical insulator, a first thin sheet metal resistor element, a first thin inner insulator, a metal midplate, a second thin inner ins... | 05/30/2000 |
| 5945905 | High power resistor A high power resistor includes a substrate of an insulating material having opposed first and second surfaces, and a strip of a resistance material on the first surface of the substrate. The resistance strip has side edges which are spaced from the side e... | 08/31/1999 |
| 5120935 | Method and apparatus for oil well stimulation utilizing electrically heated solvents A method and apparatus of stimulating production from an oil well by removing solid wax deposits from a production zone, includes an electrical resistance heater comprised of a packed bed of spherical heating elements lowered through the tubing on a wirel... | 06/09/1992 |
| 4227410 | Attitude compensating indicator An indicator for measuring the liquid content of a container comprises an attitude compensating sensor including at least two variable resistor assemblies disposed within the container. The resistor assemblies are located at opposite ends of the container... | 10/14/1980 |