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Expired Canadian patentCanada

Degreasing apparatus

CA 1181909 A · Owner: Dixon, Raymond F. · Inventors: Dixon, Raymond F.

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

A degreasing apparatus which utilizes hot water under pressure from a sink faucet to inject a degreasing solution directly into a blocked U-trap or downstream sewerage system. The degreasing apparatus consists of a small pipe elbow permanently affixed at one end to the output nozzle of a liquid dispenser and provided at the other end with a female hexagonal coupling nut for attaching the apparatus to standard U-traps. To use the apparatus the, input of the liquid dispenser is coupled by a conventional washing hose to the hot water faucet of the blocked sink. The output end of the degreasing apparatus is coupled to the input of the U-trap after the trap is uncoupled from the drain pipe of …

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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 February 5, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 5, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 4, 1982
GrantedFebruary 5, 1985
Term endedFebruary 5, 2002
Patent numberCA 1181909 A
Classification (IPC)E03D3/00 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedJan 4, 1982Patent grantedFeb 5, 1985Term endedFeb 5, 2002

Sources & verification

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