JPS51142998A - Alarm systems - Google Patents

Alarm systems

Info

Publication number
JPS51142998A
JPS51142998A JP6720075A JP6720075A JPS51142998A JP S51142998 A JPS51142998 A JP S51142998A JP 6720075 A JP6720075 A JP 6720075A JP 6720075 A JP6720075 A JP 6720075A JP S51142998 A JPS51142998 A JP S51142998A
Authority
JP
Japan
Prior art keywords
alarm systems
transmission
signals over
alarm signals
alarm
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.)
Pending
Application number
JP6720075A
Other languages
Japanese (ja)
Inventor
Naoyuki Omatoi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP6720075A priority Critical patent/JPS51142998A/en
Publication of JPS51142998A publication Critical patent/JPS51142998A/en
Pending legal-status Critical Current

Links

Landscapes

  • Alarm Systems (AREA)

Abstract

PURPOSE: Transmission of alarm signals over commercial service wires.
COPYRIGHT: (C)1976,JPO&Japio
JP6720075A 1975-06-04 1975-06-04 Alarm systems Pending JPS51142998A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6720075A JPS51142998A (en) 1975-06-04 1975-06-04 Alarm systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6720075A JPS51142998A (en) 1975-06-04 1975-06-04 Alarm systems

Publications (1)

Publication Number Publication Date
JPS51142998A true JPS51142998A (en) 1976-12-08

Family

ID=13338015

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6720075A Pending JPS51142998A (en) 1975-06-04 1975-06-04 Alarm systems

Country Status (1)

Country Link
JP (1) JPS51142998A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03222100A (en) * 1990-01-29 1991-10-01 Fujitsu Denso Ltd Social alarm system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03222100A (en) * 1990-01-29 1991-10-01 Fujitsu Denso Ltd Social alarm system

Similar Documents

Publication Publication Date Title
JPS527699A (en) Alarm inspection device
JPS5322303A (en) Audio reponse system
JPS5329011A (en) Signal transmitter
JPS51142998A (en) Alarm systems
JPS5350397A (en) Preparation of 4-hydroxycyclopent-2-ene-1-one
JPS51140182A (en) Divesting process of covered wire
JPS527618A (en) Satellite circuit quality monitoring system
JPS5238136A (en) Distance relay system
JPS51119942A (en) Detector for abnormal transmission signal abnormal detector
JPS51119154A (en) Floor heating system
JPS526440A (en) Transmission line coupling system
JPS51141559A (en) Bus control system
JPS51126007A (en) Signal transmission equipment
JPS5220719A (en) Television system
JPS5283513A (en) Novel antibiotics fortemycin c
JPS51117511A (en) Wideband cable transmission system
JPS51118053A (en) Digital type protective relay system
JPS5220285A (en) Submaring coaxial cable
JPS51138152A (en) Am waves synchronous detection system
JPS51144121A (en) Character signal overlapping system
JPS5210608A (en) Data transmission system
JPS5236999A (en) Traffic signal control unit
JPS5233411A (en) Automatic equalizing system in a wire broadcast equipment
JPS529310A (en) Relaying system
JPS51139209A (en) Bilateral catv system