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EIRAKU DENKI KK
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EIRAKU DENKI KK
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Application filed by EIRAKU DENKI KKfiledCriticalEIRAKU DENKI KK
Priority to JP1959181ApriorityCriticalpatent/JPS57135633A/en
Publication of JPS57135633ApublicationCriticalpatent/JPS57135633A/en
Method of securely interrupting the electric power supply from a low-frequency or direct voltage source to a load, and apparatus for carrying out the method