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Australian application, no grantAustralia

Improvements in or relating tothe detection of obstacles by electromagnetic waves

AU 1939005330 · Applicant: Compagnie Generate De Telegraphie Sans Fil

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 30, 1939. Even if it was granted, its term would have ended by November 30, 1960.
  • A pharmaceutical extension adds at most five years, so even that would have ended by November 30, 1965.
  • 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 30, 1939
GrantedNo grant recorded
Term ended byNovember 30, 1960
Application numberAU 1939005330
Classification (IPC)G01S13/10

Timeline

Timeline From IP Australia dates

1940194319461949195219551958Application filedNov 30, 1939Term ended byNov 30, 1960

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.