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Application filed by Radoslaw Wicha, Janusz GoldafiledCriticalRadoslaw Wicha
Priority to PL95307834ApriorityCriticalpatent/PL176515B1/en
Publication of PL307834A1publicationCriticalpatent/PL307834A1/en
Publication of PL176515B1publicationCriticalpatent/PL176515B1/en
PL95307834A1995-03-241995-03-24Apparatus for transmitting current state of call counter from a telephone exchange to an interested subscriber
PL176515B1
(en)