CH555574A - CONDITIONS MONITORING DEVICE EXISTING IN PREMISES CONTAINING A TELEPHONE SET. - Google Patents

CONDITIONS MONITORING DEVICE EXISTING IN PREMISES CONTAINING A TELEPHONE SET.

Info

Publication number
CH555574A
CH555574A CH1548071A CH1548071A CH555574A CH 555574 A CH555574 A CH 555574A CH 1548071 A CH1548071 A CH 1548071A CH 1548071 A CH1548071 A CH 1548071A CH 555574 A CH555574 A CH 555574A
Authority
CH
Switzerland
Prior art keywords
monitoring device
telephone set
device existing
conditions monitoring
premises containing
Prior art date
Application number
CH1548071A
Other languages
French (fr)
Original Assignee
Brown Preston Reaves
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 Brown Preston Reaves filed Critical Brown Preston Reaves
Publication of CH555574A publication Critical patent/CH555574A/en

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)
  • Devices For Supply Of Signal Current (AREA)
CH1548071A 1970-11-05 1971-10-25 CONDITIONS MONITORING DEVICE EXISTING IN PREMISES CONTAINING A TELEPHONE SET. CH555574A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8726770A 1970-11-05 1970-11-05

Publications (1)

Publication Number Publication Date
CH555574A true CH555574A (en) 1974-10-31

Family

ID=22204134

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1548071A CH555574A (en) 1970-11-05 1971-10-25 CONDITIONS MONITORING DEVICE EXISTING IN PREMISES CONTAINING A TELEPHONE SET.

Country Status (10)

Country Link
AU (1) AU464402B2 (en)
BE (1) BE774634A (en)
CA (1) CA932884A (en)
CH (1) CH555574A (en)
DE (1) DE2155156A1 (en)
ES (1) ES396721A1 (en)
FR (1) FR2112461B1 (en)
GB (1) GB1375579A (en)
IT (1) IT939691B (en)
NL (1) NL7115039A (en)

Also Published As

Publication number Publication date
DE2155156A1 (en) 1972-05-10
GB1375579A (en) 1974-11-27
CA932884A (en) 1973-08-28
NL7115039A (en) 1972-05-09
FR2112461B1 (en) 1976-03-26
AU464402B2 (en) 1975-08-28
IT939691B (en) 1973-02-10
BE774634A (en) 1972-02-14
FR2112461A1 (en) 1972-06-16
AU3500071A (en) 1973-05-03
ES396721A1 (en) 1974-05-16

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Legal Events

Date Code Title Description
PL Patent ceased