AU146124B2 - Call tracing arrangements in automatic telephone systems - Google Patents

Call tracing arrangements in automatic telephone systems

Info

Publication number
AU146124B2
AU146124B2 AU25470/49A AU2547049A AU146124B2 AU 146124 B2 AU146124 B2 AU 146124B2 AU 25470/49 A AU25470/49 A AU 25470/49A AU 2547049 A AU2547049 A AU 2547049A AU 146124 B2 AU146124 B2 AU 146124B2
Authority
AU
Australia
Prior art keywords
arrangements
telephone systems
automatic telephone
call tracing
tracing
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 - Lifetime
Application number
AU25470/49A
Original Assignee
present invention relates to auto through from one stage or rank to another matic telephone systems, andmore particu often arises in automatic telephone systems larly to call tracing
Filing date
Publication of AU146124B2 publication Critical patent/AU146124B2/en
Application filed by present invention relates to auto through from one stage or rank to another matic telephone systems, andmore particu often arises in automatic telephone systems larly to call tracing filed Critical present invention relates to auto through from one stage or rank to another matic telephone systems, andmore particu often arises in automatic telephone systems larly to call tracing
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

AU25470/49A 1949-01-21 Call tracing arrangements in automatic telephone systems Expired - Lifetime AU146124B2 (en)

Publications (1)

Publication Number Publication Date
AU146124B2 true AU146124B2 (en)

Family

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