Expired Australian patentAustralia
Bidirectional amplifier
AU 1978042642 · Applicant: International Standard Electric Corp
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 November 8, 1978 and granted March 22, 1982. An Australian standard patent lasts 20 years from its date of patent, which is at most a year after this filing, so its term ended by November 8, 1999.
- A pharmaceutical extension adds at most five years, so even that would have ended by November 8, 2004.
- We check Australian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 8, 1978
GrantedMarch 22, 1982
Term ended byNovember 8, 1999
Application numberAU 1978042642
Classification (IPC)H03F3/62 +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.