AU427194B2 - Intercommunication system with a number of equally accessible telephone extensions connected through two-wire speaking lines to a common exchange - Google Patents

Intercommunication system with a number of equally accessible telephone extensions connected through two-wire speaking lines to a common exchange

Info

Publication number
AU427194B2
AU427194B2 AU55460/69A AU5546069A AU427194B2 AU 427194 B2 AU427194 B2 AU 427194B2 AU 55460/69 A AU55460/69 A AU 55460/69A AU 5546069 A AU5546069 A AU 5546069A AU 427194 B2 AU427194 B2 AU 427194B2
Authority
AU
Australia
Prior art keywords
wire
intercommunication system
telephone extensions
common exchange
extensions connected
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
AU55460/69A
Other versions
AU5546069A (en
Inventor
Dittrich Edgar
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of AU427194B2 publication Critical patent/AU427194B2/en
Publication of AU5546069A publication Critical patent/AU5546069A/en
Expired legal-status Critical Current

Links

AU55460/69A 1969-05-23 Intercommunication system with a number of equally accessible telephone extensions connected through two-wire speaking lines to a common exchange Expired AU427194B2 (en)

Publications (2)

Publication Number Publication Date
AU427194B2 true AU427194B2 (en) 1970-12-03
AU5546069A AU5546069A (en) 1970-12-03

Family

ID=

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