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Australian application, no grantAustralia

Improvements in or relating to amplifiers employing magnetron or positive grid electron discharge tubes

AU 1937002708 · Applicant: Marconiswireless Telegraph Company Limited

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 June 30, 1937. Even if it was granted, its term would have ended by June 30, 1958.
  • A pharmaceutical extension adds at most five years, so even that would have ended by June 30, 1963.
  • We check Australian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 30, 1937
GrantedNo grant recorded
Term ended byJune 30, 1958
Application numberAU 1937002708
Classification (IPC)H01J23/18 +2 more

Timeline

Timeline From IP Australia dates

1938194119441947195019531956Application filedJune 30, 1937Term ended byJune 30, 1958

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.