GB269941A - 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
GB269941A
GB269941A GB11059/27A GB1105927A GB269941A GB 269941 A GB269941 A GB 269941A GB 11059/27 A GB11059/27 A GB 11059/27A GB 1105927 A GB1105927 A GB 1105927A GB 269941 A GB269941 A GB 269941A
Authority
GB
United Kingdom
Prior art keywords
relay
station
line
central station
calling
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
GB11059/27A
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 GB269941A publication Critical patent/GB269941A/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)
GB11059/27A 1926-04-26 1927-04-25 Improvements in or relating to alarm circuit systems particularly fire alarm signalling systems Expired GB269941A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE269941X 1926-04-26

Publications (1)

Publication Number Publication Date
GB269941A true GB269941A (en) 1928-07-25

Family

ID=5998026

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11059/27A Expired GB269941A (en) 1926-04-26 1927-04-25 Improvements in or relating to alarm circuit systems particularly fire alarm signalling systems

Country Status (4)

Country Link
US (1) US1740123A (enrdf_load_stackoverflow)
FR (1) FR633287A (enrdf_load_stackoverflow)
GB (1) GB269941A (enrdf_load_stackoverflow)
NL (1) NL24801C (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2820098A (en) * 1952-03-19 1958-01-14 Skogsberg Erik Lennart Signaling system

Also Published As

Publication number Publication date
FR633287A (fr) 1928-01-26
NL24801C (enrdf_load_stackoverflow)
US1740123A (en) 1929-12-17

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