GB273710A - Improvements in or relating to alarm circuit systems particularly fire alarm signalling systems - Google Patents

Improvements in or relating to alarm circuit systems particularly fire alarm signalling systems

Info

Publication number
GB273710A
GB273710A GB17063/27A GB1706327A GB273710A GB 273710 A GB273710 A GB 273710A GB 17063/27 A GB17063/27 A GB 17063/27A GB 1706327 A GB1706327 A GB 1706327A GB 273710 A GB273710 A GB 273710A
Authority
GB
United Kingdom
Prior art keywords
relay
central station
station
substation
systems
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
GB17063/27A
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.)
CORNELIUS GORDYN JR
Original Assignee
CORNELIUS GORDYN JR
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 CORNELIUS GORDYN JR filed Critical CORNELIUS GORDYN JR
Publication of GB273710A publication Critical patent/GB273710A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Alarm Systems (AREA)
  • Fire Alarms (AREA)
GB17063/27A 1926-07-03 1927-06-27 Improvements in or relating to alarm circuit systems particularly fire alarm signalling systems Expired GB273710A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE273710X 1926-07-03

Publications (1)

Publication Number Publication Date
GB273710A true GB273710A (en) 1928-08-23

Family

ID=6016627

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17063/27A Expired GB273710A (en) 1926-07-03 1927-06-27 Improvements in or relating to alarm circuit systems particularly fire alarm signalling systems

Country Status (5)

Country Link
US (1) US1734781A (enrdf_load_stackoverflow)
BE (1) BE343820A (enrdf_load_stackoverflow)
FR (1) FR636949A (enrdf_load_stackoverflow)
GB (1) GB273710A (enrdf_load_stackoverflow)
NL (1) NL29660C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
US1734781A (en) 1929-11-05
NL29660C (enrdf_load_stackoverflow)
BE343820A (enrdf_load_stackoverflow)
FR636949A (fr) 1928-04-19

Similar Documents

Publication Publication Date Title
GB273710A (en) Improvements in or relating to alarm circuit systems particularly fire alarm signalling systems
US2300186A (en) Telephone system
US2485351A (en) Automatic telephone system
US1899112A (en) Multioffice telephone system
GB722172A (en) Improvements in or relating to automatic telephone exchange systems
GB442555A (en) Improvements in or relating to traffic control systems
GB269941A (en) Improvements in or relating to alarm circuit systems particularly fire alarm signalling systems
US2747016A (en) Conversation timing circuit
US1611655A (en) Ringing-current interrupting and distributing equipment
US1867791A (en) Automatic telephone system
US1449644A (en) Telephone system
GB344362A (en) Improvements in or relating to telephone systems
GB641888A (en) Improvements in or relating to electric signalling systems
US1291587A (en) Two-wire party-line lock-out telephone system.
US1850608A (en) Telephone system
US1842659A (en) Telephone system
GB719121A (en) Improvements in road traffic signalling installations
US1484933A (en) Telephone system
US1434968A (en) Call-distributing telephone system
US1403671A (en) Telephone system
US1517283A (en) Automatic telephone system
US1598918A (en) Telephone-exchange system
GB357153A (en) Improvements in or relating to telephone systems
GB268515A (en) Improvements in or relating to electrical remote control systems
GB263926A (en) Improvements relating to electric remote control systems