Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 7134161 | Mechanical broom A sweeper comprising a main wheel being capable of spinning in both a counterclockwise and a clockwise direction in response to the broom being moved backwards or forwards. The sweeper has a brush wheel driven by the main wheel and being capable of spinning in one d... | 11/14/2006 |
| 5875518 | Castor A castor comprises a fork (10) carrying an axle (11) which extends through an aperture in both limbs (12 and 13) and by which a single wheel comprising two discs (14 and 15) is mounted on the fork (10). A roller bearing (22) is mounted on the axle (11). E... | 03/02/1999 |
| 4438601 | Sandpaper cleaning device A sandpaper cleaning tool is disclosed comprising an elongated horizontal handle. First and second U-shaped brackets are secured to one surface of the handle and are axially offset with respect to each other and with the longitudinal axis of the handle. C... | 03/27/1984 |
| 4015613 | Tank cleaning apparatus This apparatus has a unitary, flexible hose assembly with an inner hose for discharging fuel or other liquid under pressure into a tank to agitate its contents and an outer hose for withdrawing the liquid and entrained impurities from the tank. A pump and... | 04/05/1977 |
