ES302220A1 - Perfeccionamientos en los aparatos de alarma - Google Patents

Perfeccionamientos en los aparatos de alarma

Info

Publication number
ES302220A1
ES302220A1 ES0302220A ES302220A ES302220A1 ES 302220 A1 ES302220 A1 ES 302220A1 ES 0302220 A ES0302220 A ES 0302220A ES 302220 A ES302220 A ES 302220A ES 302220 A1 ES302220 A1 ES 302220A1
Authority
ES
Spain
Prior art keywords
relating
signal
alarm apparatus
alarm
radio
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
ES0302220A
Other languages
English (en)
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.)
JEFFERIES JOHN GEORGE
Original Assignee
JEFFERIES JOHN GEORGE
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 JEFFERIES JOHN GEORGE filed Critical JEFFERIES JOHN GEORGE
Publication of ES302220A1 publication Critical patent/ES302220A1/es
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B23/00—Alarms responsive to unspecified undesired or abnormal conditions
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Transmitters (AREA)
  • Alarm Systems (AREA)
  • Transceivers (AREA)
ES0302220A 1963-07-20 1964-07-17 Perfeccionamientos en los aparatos de alarma Expired ES302220A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2057363A GB1072672A (en) 1963-07-20 1963-07-20 Improvements in and relating to alarm apparatus

Publications (1)

Publication Number Publication Date
ES302220A1 true ES302220A1 (es) 1965-01-16

Family

ID=10148140

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0302220A Expired ES302220A1 (es) 1963-07-20 1964-07-17 Perfeccionamientos en los aparatos de alarma

Country Status (5)

Country Link
CH (1) CH406912A (es)
ES (1) ES302220A1 (es)
GB (1) GB1072672A (es)
NL (1) NL6408205A (es)
NO (1) NO119716B (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2172831B1 (es) * 1972-02-22 1974-08-02 Leandri Walter

Also Published As

Publication number Publication date
NO119716B (es) 1970-06-22
NL6408205A (es) 1964-11-25
GB1072672A (en) 1967-06-21
CH406912A (fr) 1966-01-31

Similar Documents

Publication Publication Date Title
ES320859A1 (es) Un metodo para afectar el sistema nervioso de un paciente mediante señales electricas.
ES302220A1 (es) Perfeccionamientos en los aparatos de alarma
ES287295A1 (es) Un procedimiento para reducir las perturbaciones después de la detección de dos señales moduladas en frecuencia de tono
ES285930A1 (es) Un dispositivo de emisión y de recepción de señales de video
GB971802A (en) Signalling system for substation apparatus
JPS52149903A (en) Data transmitter
FR1313820A (fr) Dispositif de réception d'une modulation télégraphique rythmique permettant notamment le multiplexage de modulations télégraphiques arythmiques
DK108398C (da) Elektrisk tonefrekvenssignaleringsanlæg.
BE615032A (fr) Dispositif de modulation de fréquence
JPS5271911A (en) Dc-ac amplitude modulation transmitting system
GB1059606A (en) A ringer
ES278803A1 (es) Dispositivo transmisor para la transmisiën de informaciën por modulaciën de impulsos codificados
AU272547B2 (en) Improvements relating to arrangements for generating and sending multifrequency code signals
CA637633A (en) Device for amplifying producing or modulating electrical oscillations
CA645584A (en) Amplitude modulated radio frequency transmitter
AU3546363A (en) Improvements relating to arrangements for generating and sending multifrequency code signals
AU262253B2 (en) Improvements in signal transmitting systems using a frequency modulated wave
ES271429A1 (es) Un sistema para la transmisión de una señal por medio de una onda modulada
CA611830A (en) Start-stop telegraph signal generator
GB1062452A (en) Installation for the transmission of information
FR1366471A (fr) Récepteur de signaux modulés soit en amplitude soit en fréquence, avec indicateur d'accord
GB996835A (en) Multi-frequency code signalling method
AU268269B2 (en) Low-nobe frequency modulation receiver
AU1034261A (en) Improvements in signal transmitting systems using a frequency modulated wave
CA650148A (en) Frequency modulated oscillator