Australian application, no grantAustralia
A telephone system witha relay-less line circuit and circuits in cooperation therein for extending a call
AU 1952008389 · Applicant: Automatic Electric Laboratories Inc
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 February 29, 1952. Even if it was granted, its term would have ended by February 28, 1973.
- A pharmaceutical extension adds at most five years, so even that would have ended by March 1, 1978.
- We check Australian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 29, 1952
GrantedNo grant recorded
Term ended byFebruary 28, 1973
Application numberAU 1952008389
Classification (IPC)H04Q3/52 +1 more
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.