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Australian application, no grantAustralia

Improvements in or relating to apparatus for transforming electrical energy

AU 1920015518 · Applicant: William Eden Highfield

AusPat record

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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 May 10, 1920. Even if it was granted, its term would have ended by May 10, 1941.
  • A pharmaceutical extension adds at most five years, so even that would have ended by May 10, 1946.
  • We check Australian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 10, 1920
GrantedNo grant recorded
Term ended byMay 10, 1941
Application numberAU 1920015518
Classification (IPC)—

Timeline

Timeline From IP Australia dates

1921192419271930193319361939Application filedMay 10, 1920Term ended byMay 10, 1941

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.