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Expired Canadian patentCanada

Light weight flexible coaxial vapor recovery hose

CA 1299545 C · Owner: The Goodyear Tire & Rubber Company · Inventors: Stanley, John Howard

CIPO record

Overview

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

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Abstract From the Canadian patent

There is disclosed a coaxial vapor recovery hose assembly (10) comprising an inner hose (26) an outer, hose (12), and means for holding said hoses in concentric relationship (44); wherein said inner hose (26) is substantially reinforced to be relatively incompressible as well as being capable of bearing tensile stress applied to the assembly and having an outside diameter; wherein said outer hose (12) is corrugated and has an inside diameter larger than said outside diameter to define a vapor passageway (30) therebetween.

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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 April 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 28, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 11, 1987
GrantedApril 28, 1992
Term endedApril 28, 2009
Patent numberCA 1299545 C
Classification (IPC)B67D7/06 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedSep 11, 1987Patent grantedApril 28, 1992Term endedApril 28, 2009

Sources & verification

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