ES292813A3 - Improvements introduced in the telephone circuits that allow the warning of calls in occupied appliances or in conversation (Machine-translation by Google Translate, not legally binding)
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Improvements introduced in the telephone circuits that allow the warning of calls in occupied appliances or in conversation (Machine-translation by Google Translate, not legally binding)
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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ACETI GIOVANNI
SCIRETTI BENITO
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ACETI GIOVANNI
SCIRETTI BENITO
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Application filed by ACETI GIOVANNI, SCIRETTI BENITOfiledCriticalACETI GIOVANNI
Priority to ES0292813ApriorityCriticalpatent/ES292813A3/en
Publication of ES292813A3publicationCriticalpatent/ES292813A3/en
Improvements introduced in the telephone circuits that allow the call warning in the busy devices or in conversation, characterized by having inserted on the circuit of the preselector of each device a coil capable of revealing the low voltage pulses that arrive at the device occupied from a third calling device, through the closed or open circuits for testing and blocking the line selectors, a capacitor capable of being charged by the aforementioned low voltage impulse, a coil connected to one of the cables of the line of the apparatus and arranged in a mutual induction manner with the coil mounted on the preselector and capable of receiving and amplifying the impulse that reaches the coil of the preselector and sending it to the headset of the apparatus. (Machine-translation by Google Translate, not legally binding)
ES0292813A1963-10-231963-10-23Improvements introduced in the telephone circuits that allow the warning of calls in occupied appliances or in conversation (Machine-translation by Google Translate, not legally binding)
ExpiredES292813A3
(en)
Improvements introduced in the telephone circuits that allow the warning of calls in occupied appliances or in conversation (Machine-translation by Google Translate, not legally binding)
Improvements introduced in the telephone circuits that allow the warning of calls in occupied appliances or in conversation (Machine-translation by Google Translate, not legally binding)
Improvements introduced in the telephone circuits that allow the warning of calls in occupied appliances or in conversation (Machine-translation by Google Translate, not legally binding)
Improvements introduced in the telephone circuits that allow the warning of calls in occupied appliances or in conversation (Machine-translation by Google Translate, not legally binding)
Circuit arrangement for telecommunications, in particular telephone systems, in which call number transmitters are used for the automatic establishment of certain connections
Circuit arrangement for telecommunications switching systems, in particular telephone switching systems, with switching switching devices designed for two-wire through-connections
A circuit for the transmission of computer impulses received through the computer threads in telecommunication systems and particularly in telephone systems. (Machine-translation by Google Translate, not legally binding)