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Publication of FR542682ApublicationCriticalpatent/FR542682A/en
H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
H01H19/02—Details
H01H19/10—Movable parts; Contacts mounted thereon
H01H19/14—Operating parts, e.g. turn knob
FR542682D1921-10-251921-10-25
Improvements to rotary covers for switches
ExpiredFR542682A
(en)