Australian application, no grantAustralia
Improvements in and relating to amplifiers of sound re-producing machines
AU 1923013644 · Applicant: Max Steinberg
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 August 12, 1923. Even if it was granted, its term would have ended by August 12, 1944.
- A pharmaceutical extension adds at most five years, so even that would have ended by August 12, 1949.
- We check Australian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 12, 1923
GrantedNo grant recorded
Term ended byAugust 12, 1944
Application numberAU 1923013644
Classification (IPC)G10K11/02
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.