Australian application, no grantAustralia
Improvements in or relating to transmitting and receiving apparatus for use witb telephones and the like
AU 1931000459 · Applicant: For Use With Telephones Andthe Like I Douglas Stuart Spens Steuart Ofthe Telephone Without Bringing The Tele St Marks House St Marks Square Phone Infront Of Him Or Bringing His Lips Regents Park London England Gentleman Tothe Mou
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 September 3, 1931. Even if it was granted, its term would have ended by September 3, 1952.
- A pharmaceutical extension adds at most five years, so even that would have ended by September 3, 1957.
- We check Australian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 3, 1931
GrantedNo grant recorded
Term ended bySeptember 3, 1952
Application numberAU 1931000459
Classification (IPC)H04M1/03 +2 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.