AU2559230A - Improvements relating to telephone systems - Google Patents
Improvements relating to telephone systemsInfo
- Publication number
- AU2559230A AU2559230A AU25592/30A AU2559230A AU2559230A AU 2559230 A AU2559230 A AU 2559230A AU 25592/30 A AU25592/30 A AU 25592/30A AU 2559230 A AU2559230 A AU 2559230A AU 2559230 A AU2559230 A AU 2559230A
- Authority
- AU
- Australia
- Prior art keywords
- improvements relating
- telephone systems
- telephone
- relating
- 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
Links
Publications (1)
Publication Number | Publication Date |
---|---|
AU2559230A true AU2559230A (en) | 1930-11-25 |
Family
ID=
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