AU255521A - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
AU255521A
AU255521A AU2555/21A AU255521A AU255521A AU 255521 A AU255521 A AU 255521A AU 2555/21 A AU2555/21 A AU 2555/21A AU 255521 A AU255521 A AU 255521A AU 255521 A AU255521 A AU 255521A
Authority
AU
Australia
Prior art keywords
relating
telephone systems
telephone
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
AU2555/21A
Inventor
and John Edward Gardner Telephone Engineers LOOI West Vanburen Streed Chicago III. U. SA Rodney Gun Richardson
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.)
Automatic Electric Co
Original Assignee
Automatic Electric Co
Filing date
Publication date
Application filed by Automatic Electric Co filed Critical Automatic Electric Co
Publication of AU255521A publication Critical patent/AU255521A/en
Expired legal-status Critical Current

Links

AU2555/21A 1921-07-09 Improvements in or relating to telephone systems Expired AU255521A (en)

Publications (1)

Publication Number Publication Date
AU255521A true AU255521A (en) 1922-07-18

Family

ID=

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