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Expired Canadian patentCanada

Elliptical tube coil assembly for evaporative heat exchanger

CA 1287344 C · Owner: Merrill, Richard P. · Inventors: Shriver, George R.; Merrill, Richard P.

CIPO record

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Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Abstract of the Disclosure, The present invention relates to a coil assembly for use in an evaporative parallel flow or counterflow heat exchanger wherein the heat exchanger comprises a conduit oriented in a vertical direction through which external heat exchange fluids flow in a generally vertical direction the coil assembly being, mountable within the conduit the coil assembly comprising inlet, and outlet manifolds and a plurality of tubes connecting the manifolds, the tubes including bights and segments extending generally horizontally across the conduit and connected to at least one bight, the bights being oriented vertically and connecting segments of the tube at different levels …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted August 6, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 6, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 20, 1987
GrantedAugust 6, 1991
Term endedAugust 6, 2008
Patent numberCA 1287344 C
Classification (IPC)F28D5/02 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedMay 20, 1987Patent grantedAug 6, 1991Term endedAug 6, 2008

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.