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Expired Canadian patentCanada

Method and apparatus for treatment of snoring

CA 1332905 C · Owner: Murchie, John A. · Inventors: Murchie, John A.

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

The present invention provides an improved method and apparatus for treatment of snoring and apnea. The method provides the steps of regulating the flow of air through the mouth of the user to an extent comparable to the volume of air which flows through the user's nasal passages. The apparatus provides a device having a body portion sufficiently wide to separate the user's teeth and provided with an air passage comparable in area to the area of the user's nasal passages. In a preferred form of the invention the user is able to seal the air passage with his tongue to completely suppress the flow of air through the mouth and to control the turbulence of the air meeting the nasal inspiration.

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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 November 8, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 8, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 10, 1989
GrantedNovember 8, 1994
Term endedNovember 8, 2011
Patent numberCA 1332905 C
Classification (IPC)A61F5/56

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedMarch 10, 1989Patent grantedNov 8, 1994Term endedNov 8, 2011

Sources & verification

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