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Expired Canadian patentCanada

Heat exchanger

CA 1079263 A · Owner: Ostbo, John D.B. · Inventors: Ostbo, John D.B.

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

A heat exchange unit is disclosed of the type having a plurality of plate-like exchange members. The unit is composed of two elements of generally identical configuration, each having two risers for an inlet and outlet for one of the exchange plates, the second exchange plate being arranged to pass through openings in the plate elements. The unit is extremely compact due to the arrangement whereby risers communicating the passages in heat exchange plates are disposed at adjacent corners of the respective plates. Each plate is fixedly secured to its own risers and releasably secured to the risers of the opposite heat exchange element. The invention provides an extremely compact heat …

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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 June 10, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 10, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJune 10, 1980
Term endedJune 10, 1997
Patent numberCA 1079263 A
Classification (IPC)F28F1/24 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJune 10, 1980Term endedJune 10, 1997

Sources & verification

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