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Expired Australian patentAustralia

System for randomly accessing recirculating memory

AU 1979044287 · Applicant: International Business Machines Corporation

AusPat record

Overview

Drawings and full text

Its specification, documents and status are on IP Australia's AusPat.

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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 15, 1979 and granted November 11, 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 February 15, 2000.
  • A pharmaceutical extension adds at most five years, so even that would have ended by February 15, 2005.
  • 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 15, 1979
GrantedNovember 11, 1982
Term ended byFebruary 15, 2000
Application numberAU 1979044287
Classification (IPC)G06F7/78 +2 more

Timeline

Timeline From IP Australia dates

1980198319861989199219951998Application filedFeb 15, 1979Patent grantedNov 11, 1982Term ended byFeb 15, 2000

Sources & verification

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.