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G04F1/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers
Elektromotorischer Ventilantrieb, bei dem bei UEberschreiten eines bestimmten Drehmomentes eine entgegen einer Federkraft axial verschiebbare Schnecke Endausschalter betaetigt