AU464402B2 - Improvements in alarm signalling systems - Google Patents

Improvements in alarm signalling systems

Info

Publication number
AU464402B2
AU464402B2 AU35000/71A AU3500071A AU464402B2 AU 464402 B2 AU464402 B2 AU 464402B2 AU 35000/71 A AU35000/71 A AU 35000/71A AU 3500071 A AU3500071 A AU 3500071A AU 464402 B2 AU464402 B2 AU 464402B2
Authority
AU
Australia
Prior art keywords
signalling systems
alarm signalling
alarm
systems
signalling
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
AU35000/71A
Other versions
AU3500071A (en
Inventor
Reaves Brown Preston
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
Publication of AU3500071A publication Critical patent/AU3500071A/en
Application granted granted Critical
Publication of AU464402B2 publication Critical patent/AU464402B2/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)
  • Devices For Supply Of Signal Current (AREA)
AU35000/71A 1970-11-05 1971-10-26 Improvements in alarm signalling systems Expired AU464402B2 (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
AU3500071A AU3500071A (en) 1973-05-03
AU464402B2 true AU464402B2 (en) 1975-08-28

Family

ID=22204134

Family Applications (1)

Application Number Title Priority Date Filing Date
AU35000/71A Expired AU464402B2 (en) 1970-11-05 1971-10-26 Improvements in alarm signalling systems

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
AU3500071A (en) 1973-05-03
FR2112461A1 (en) 1972-06-16
BE774634A (en) 1972-02-14
DE2155156A1 (en) 1972-05-10
ES396721A1 (en) 1974-05-16
FR2112461B1 (en) 1976-03-26
CA932884A (en) 1973-08-28
IT939691B (en) 1973-02-10
GB1375579A (en) 1974-11-27
CH555574A (en) 1974-10-31
NL7115039A (en) 1972-05-09

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