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Australian application, no grantAustralia

An improved treatment of agricultural soil forthe destruction of noxious insect life therein

AU 1921004375 · Applicant: Frank Henry Dean

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 November 10, 1921. Even if it was granted, its term would have ended by November 10, 1942.
  • A pharmaceutical extension adds at most five years, so even that would have ended by November 10, 1947.
  • 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 10, 1921
GrantedNo grant recorded
Term ended byNovember 10, 1942
Application numberAU 1921004375
Classification (IPC)A01B77/00 +1 more

Timeline

Timeline From IP Australia dates

1922192519281931193419371940Application filedNov 10, 1921Term ended byNov 10, 1942

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.