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Expired Canadian patentCanada

Recreational vehicle discharge pipe adapter

CA 1283936 C · Owner: Todd, Harry V. · Inventors: Todd, Harry V.

CIPO record

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

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Abstract From the Canadian patent

17-, Recreational Vehicle Discharge Pipe Adapter Abstract of the Disclosure, An adapter for coupling a corrugated drainpipe to recreational vehicle discharge pipe employs a tubular member having a discharge pipe end portion of a shape and size adapted to be placed over an outlet end of the discharge pipe, and a drainpipe end portion having a shape and size adapted to engage threadably an end of a corrugated drainpipe. A helically-shaped thread along the drainpipe end portion are sized and shaped complementary to conform to the corrugations of the corrugated drainpipe enables threaded engagement of the corrugated drainpipe. <18043-01.A10>

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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 May 7, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 7, 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.
FiledSeptember 24, 1986
GrantedMay 7, 1991
Term endedMay 7, 2008
Patent numberCA 1283936 C
Classification (IPC)F16L25/00

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedSep 24, 1986Patent grantedMay 7, 1991Term endedMay 7, 2008

Sources & verification

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