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Expired Canadian patentCanada

Device for the removal of foul air from toilet bowls, or the like

CA 1109604 A · Owner: Stamper, Robin H. · Inventors: Stamper, Robin H.

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

The invention concerns a device for the removal of foul air from toilet bowls or the like. The device comprises a conduit having an inlet opening and at least one outlet opening spaced from the inlet opening. The conduit has a hook shape and is capable of hooking over the rim of the toilet bowl and under the seat so that the inlet opening is within the bowl and the outlet opening is outside the bowl. The device also includes an air treatment means within the conduit, capable of improving the quality of foul air passing through it. The device also includes a batteryoperable fan capable of drawing foul air out of the bowl via the inlet opening, along the conduit through the air, treatment …

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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 September 29, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 29, 1998.
  • 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 25, 1979
GrantedSeptember 29, 1981
Term endedSeptember 29, 1998
Patent numberCA 1109604 A
Classification (IPC)E03D9/04 +1 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedSep 25, 1979Patent grantedSep 29, 1981Term endedSep 29, 1998

Sources & verification

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