FR865034A - Dispositif applicable aux téléphones à pièces de monnaie ou jetons pour le contrôle des taxes de communications de valeurs différentes
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Dispositif applicable aux téléphones à pièces de monnaie ou jetons pour le contrôle des taxes de communications de valeurs différentes
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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Telephon Apparat Fabrik E Zwietusch and Co
Original Assignee
Telephon Apparat Fabrik E Zwietusch and Co
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Application filed by Telephon Apparat Fabrik E Zwietusch and CofiledCriticalTelephon Apparat Fabrik E Zwietusch and Co
Application grantedgrantedCritical
Publication of FR865034ApublicationCriticalpatent/FR865034A/fr
H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems
H04M17/02—Coin-freed or check-freed systems, e.g. mobile- or card-operated phones, public telephones or booths
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Engineering & Computer Science
(AREA)
Computer Networks & Wireless Communication
(AREA)
Computer Security & Cryptography
(AREA)
Signal Processing
(AREA)
FR865034D1938-12-101940-04-18Dispositif applicable aux téléphones à pièces de monnaie ou jetons pour le contrôle des taxes de communications de valeurs différentes
ExpiredFR865034A
(fr)