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Expired Australian patentAustralia

Dsb demodulation

AU 1982084078 · Applicant: Nv Philips Gloeilampenfabrieken

AusPat record

Overview

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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 24, 1982 and granted February 11, 1987. 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 May 24, 2003.
  • A pharmaceutical extension adds at most five years, so even that would have ended by May 24, 2008.
  • 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 24, 1982
GrantedFebruary 11, 1987
Term ended byMay 24, 2003
Application numberAU 1982084078
Classification (IPC)H03L7/087 +2 more

Timeline

Timeline From IP Australia dates

1983198619891992199519982001Application filedMay 24, 1982Patent grantedFeb 11, 1987Term ended byMay 24, 2003

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.