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Expired Australian patentAustralia

Flow guiding in tube bundle heat exhangers

AU 1979043648 · Applicant: Swisscal Holding Sa

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 January 24, 1979 and granted April 5, 1984. 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 January 24, 2000.
  • A pharmaceutical extension adds at most five years, so even that would have ended by January 24, 2005.
  • We check Australian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 24, 1979
GrantedApril 5, 1984
Term ended byJanuary 24, 2000
Application numberAU 1979043648
Classification (IPC)F28F9/22 +1 more

Timeline

Timeline From IP Australia dates

1980198319861989199219951998Application filedJan 24, 1979Patent grantedApril 5, 1984Term ended byJan 24, 2000

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.