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Application filed by Siemens Schuckertwerke GmbhfiledCriticalSiemens Schuckertwerke Gmbh
Application grantedgrantedCritical
Publication of AT184850BpublicationCriticalpatent/AT184850B/en
AT184850D1952-10-311952-10-31
Arrangement for securing or monitoring the operation of electrical systems consisting of two or more units
AT184850B
(en)