AU445557B2 - Improvements in or relating to circuits for private automatic telephone exchange systems - Google Patents

Improvements in or relating to circuits for private automatic telephone exchange systems

Info

Publication number
AU445557B2
AU445557B2 AU20515/70A AU2051570A AU445557B2 AU 445557 B2 AU445557 B2 AU 445557B2 AU 20515/70 A AU20515/70 A AU 20515/70A AU 2051570 A AU2051570 A AU 2051570A AU 445557 B2 AU445557 B2 AU 445557B2
Authority
AU
Australia
Prior art keywords
relating
circuits
telephone exchange
automatic telephone
exchange 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
AU20515/70A
Other versions
AU2051570A (en
Inventor
Lawrence Jacobs Michael
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of AU445557B2 publication Critical patent/AU445557B2/en
Publication of AU2051570A publication Critical patent/AU2051570A/en
Expired legal-status Critical Current

Links

AU20515/70A 1969-10-02 1970-09-30 Improvements in or relating to circuits for private automatic telephone exchange systems Expired AU445557B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB48561 1969-10-02

Publications (2)

Publication Number Publication Date
AU445557B2 true AU445557B2 (en) 1972-04-13
AU2051570A AU2051570A (en) 1972-04-13

Family

ID=

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