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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NEOPHONE EQUIPMENT
Original Assignee
NEOPHONE EQUIPMENT
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Filing date
Publication date
Application filed by NEOPHONE EQUIPMENTfiledCriticalNEOPHONE EQUIPMENT
Priority to ES361595ApriorityCriticalpatent/ES361595A3/es
Publication of ES361595A3publicationCriticalpatent/ES361595A3/es
Improvements in or relating to circuit. arrangements for telephone installations inwhich switching selectors are arranged tobe set by means of marking devices