Patent classifications
H
ELECTRICITY
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H01
ELECTRIC ELEMENTS
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H01H
ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
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27/00
Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings
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H01H27/06
Key inserted and then turned to effect operation of the switch
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H01H27/08
wherein the key cannot be removed until the switch is returned to its original position
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