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Filing date
Publication date
Application filed by Arthur BoetelfiledCriticalArthur Boetel
Publication of CH79727ApublicationCriticalpatent/CH79727A/de
CH79727A1918-01-291918-01-29Automatisch wirkende Vorrichtung zum Aus- oder Einschalten von Gas-, Flüssigkeits- oder elektrischen Leitungen
CH79727A
(de)