Australian application, no grantAustralia
Automatic telecommunication exchange provided with arrangements for detecting a calling subscribers line
AU 1957029611 · Applicant: Standard Telephones & Cables Pty Limited
Overview
Drawings and full text
Its specification, documents and status are on IP Australia's AusPat.
Open the AusPat recordRead the whole patent
Listed from its IP Australia record in Patent Yard's archive of Australian patents past their term. Its claims, description and drawings are in the AusPat record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed July 17, 1957. Even if it was granted, its term would have ended by July 17, 1978.
- A pharmaceutical extension adds at most five years, so even that would have ended by July 17, 1983.
- We check Australian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 17, 1957
GrantedNo grant recorded
Term ended byJuly 17, 1978
Application numberAU 1957029611
Classification (IPC)H04Q3/72
Timeline
Timeline From IP Australia dates
Sources & verification
Official IP Australia records
Everything on this page comes from the IP Australia record linked above. Data from IP Australia's IPGOD, licensed under CC BY 2.5 AU.