AU730227A - Improvements in telephone systems - Google Patents
Improvements in telephone systemsInfo
- Publication number
- AU730227A AU730227A AU7302/27A AU730227A AU730227A AU 730227 A AU730227 A AU 730227A AU 7302/27 A AU7302/27 A AU 7302/27A AU 730227 A AU730227 A AU 730227A AU 730227 A AU730227 A AU 730227A
- Authority
- AU
- Australia
- Prior art keywords
- 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
Links
Publications (1)
Publication Number | Publication Date |
---|---|
AU730227A true AU730227A (en) | 1928-03-06 |
Family
ID=
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