ES189942Y - Aparato de recepción y transmisión de señales acústicas aplicables a un aparato telefónico - Google Patents

Aparato de recepción y transmisión de señales acústicas aplicables a un aparato telefónico

Info

Publication number
ES189942Y
ES189942Y ES0189942U ES189942U ES189942Y ES 189942 Y ES189942 Y ES 189942Y ES 0189942 U ES0189942 U ES 0189942U ES 189942 U ES189942 U ES 189942U ES 189942 Y ES189942 Y ES 189942Y
Authority
ES
Spain
Prior art keywords
receiving
acoustic signals
transmitting acoustic
signals applicable
telephone
Prior art date
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.)
Expired
Application number
ES0189942U
Other languages
English (en)
Other versions
ES189942U (es
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.)
Bracassi Bruno
Original Assignee
Bracassi Bruno
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bracassi Bruno filed Critical Bracassi Bruno
Priority to ES0189942U priority Critical patent/ES189942Y/es
Publication of ES189942U publication Critical patent/ES189942U/es
Application granted granted Critical
Publication of ES189942Y publication Critical patent/ES189942Y/es
Expired legal-status Critical Current

Links

ES0189942U 1973-03-23 1973-03-23 Aparato de recepción y transmisión de señales acústicas aplicables a un aparato telefónico Expired ES189942Y (es)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES0189942U ES189942Y (es) 1973-03-23 1973-03-23 Aparato de recepción y transmisión de señales acústicas aplicables a un aparato telefónico

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES0189942U ES189942Y (es) 1973-03-23 1973-03-23 Aparato de recepción y transmisión de señales acústicas aplicables a un aparato telefónico

Publications (2)

Publication Number Publication Date
ES189942U ES189942U (es) 1974-04-16
ES189942Y true ES189942Y (es) 1974-10-16

Family

ID=57904993

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0189942U Expired ES189942Y (es) 1973-03-23 1973-03-23 Aparato de recepción y transmisión de señales acústicas aplicables a un aparato telefónico

Country Status (1)

Country Link
ES (1) ES189942Y (es)

Also Published As

Publication number Publication date
ES189942U (es) 1974-04-16

Similar Documents

Publication Publication Date Title
AU502616B2 (en) Broad band acoustic speaker
ZA743183B (en) Means for transmitting signals in telecommunication cables
AU6429474A (en) Electro-acoustic transducer
IT1013455B (it) Dispositivo di controllo di ascolto di un ricevitore
SE402849B (sv) Flerfrekvenssignalmottagare
NO142639C (no) Apparat for utsendelse av akustiske boelger.
IT1028448B (it) Sistema di trasmissione per segnali impulsivi a frequenza fissa di orologio
BR7403504D0 (pt) Transmissor de sinais
BE821003A (fr) Dispositif a ondes de surface acoustiques
ZA757642B (en) Digital multifrequency signals receiver
CA1009314A (en) Digital multifrequency signal generator
BE833155A (fr) Convertisseur de signal pour recepteur de signal multifrequence
SE414103B (sv) Anordning for atersynkronisering av en mottagare for tidsmultiplexsignaler
SE404444B (sv) Tidsmultiplext signaloverforingssystm
ES189942Y (es) Aparato de recepción y transmisión de señales acústicas aplicables a un aparato telefónico
CA984533A (en) Apparatus for detecting telephone ringing signals
SE389954C (sv) Telefonapparat
AU6877474A (en) Sound damping apparatus
JPS5253526A (en) Transmitting device for order signal
IT1011198B (it) Dispositivo per la trasmissione mascherata di segnali vocali
ZA73872B (en) Apparatus for repeating a dialling signal
ZA737683B (en) Method for varying the frequencies of a communication signal
ZA734088B (en) Transmitter-receiver for telephone signals
AU6687974A (en) Electro-acoustic transducers
IT1037582B (it) Ricevitore di segnali multifrequenze