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Expired Canadian patentCanada

Tube bundle

CA 1097159 A · Owner: Hudson Products Corporation · Inventors: Kluppel, George E.; Smith, Ennis C.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

There is disclosed apparatus for condensing steam, or other vapors containing non-condensibles such as air, which includes bundles each made up of a single row of parallel, side-by-side and spaced-apart tubes over which air is passed in a direction transverse to the row. Each tube has substantially parallel side walls which are generally parallel to the side walls of adjacent tubes, with the side walls being substantially longer in the direction of air flow than the width of the tube.

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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 March 10, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 10, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 3, 1978
GrantedMarch 10, 1981
Term endedMarch 10, 1998
Patent numberCA 1097159 A
Classification (IPC)F28B9/10 +1 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedOct 3, 1978Patent grantedMarch 10, 1981Term endedMarch 10, 1998

Sources & verification

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