AU887227A - Improved circuit arrangements in automatic telephone systems - Google Patents

Improved circuit arrangements in automatic telephone systems

Info

Publication number
AU887227A
AU887227A AU8872/27A AU887227A AU887227A AU 887227 A AU887227 A AU 887227A AU 8872/27 A AU8872/27 A AU 8872/27A AU 887227 A AU887227 A AU 887227A AU 887227 A AU887227 A AU 887227A
Authority
AU
Australia
Prior art keywords
telephone systems
circuit arrangements
automatic telephone
improved circuit
improved
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
AU8872/27A
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.)
Siemens Brothers and Co Ltd
Original Assignee
Siemens Brothers and Co Ltd
Filing date
Publication date
Application filed by Siemens Brothers and Co Ltd filed Critical Siemens Brothers and Co Ltd
Publication of AU887227A publication Critical patent/AU887227A/en
Expired legal-status Critical Current

Links

AU8872/27A 1928-05-10 Improved circuit arrangements in automatic telephone systems Expired AU887227A (en)

Publications (1)

Publication Number Publication Date
AU887227A true AU887227A (en) 1928-05-22

Family

ID=

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