Australian application, no grantAustralia
Improvements relating to automatic telephone systems
AU 1932008370 · Applicant: Siemens Brothers & Co 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 22, 1932. Even if it was granted, its term would have ended by July 22, 1953.
- A pharmaceutical extension adds at most five years, so even that would have ended by July 22, 1958.
- 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 22, 1932
GrantedNo grant recorded
Term ended byJuly 22, 1953
Application numberAU 1932008370
Classification (IPC)H04M15/10
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.