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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telcom 2000 S L
Original Assignee
Telcom 2000 S L
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Filing date
Publication date
Application filed by Telcom 2000 S LfiledCriticalTelcom 2000 S L
Priority to ES8803588ApriorityCriticalpatent/ES2013817A6/en
Publication of ES2013817A6publicationCriticalpatent/ES2013817A6/en
Improved telephone billing device. Which has means for the detection of the change of polarity of the line for calls of a local type through an exchange, incorporating functions of printing on a ticket of the telephone no. dialled, the cost of the call, the date, the identification of the hotel or establishment and the ordinal no. of the ticket. <IMAGE>