Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Individual
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Individual
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Application filed by IndividualfiledCriticalIndividual
Priority to JP10808881ApriorityCriticalpatent/JPS6231542B1/ja
Publication of JPS6231542B1publicationCriticalpatent/JPS6231542B1/ja
Circuit arrangement branch exchange for a telephone installation,especially an installation with code selection and impulse selection of the subscriber stations