The first exchanges were installed in England at Darlington (10 October 1914) and Dudley (9 September 1916).
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The term seems to have originated in the era of the 7A Rotary system exchange, and was superseded by "Technician" circa 1960, perhaps because "Mechanician" was no longer considered appropriate after the first Strowger switch exchanges began to be introduced in 1952 (in Auckland, at Birkenhead, New Zealand exchange).
The stator is the stationary part of a rotary system, found in electric generators, electric motors, sirens, or biological rotors.