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Expired Canadian patentCanada

Apparatus signalling parturition

CA 1104229 A · Owner: Lorette, Rene · Inventors: Lorette, Rene

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 relates to a parturition warning device for an animal and comprises a first member intended for, stable location beneath the tail but above the anus of the animal, a second member pivotally attached to the first member, and resilient means for urging the second member against the vulva of the animal, the second member being located to completely cover the vulva of the animal and arranged to actuate an electrical switch when displaced, away from the vulva indicative of a positive issue from the vulva in the early stages of the birth to activate an, alarm system.

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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 June 30, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 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.
FiledFebruary 27, 1978
GrantedJune 30, 1981
Term endedJune 30, 1998
Patent numberCA 1104229 A
Classification (IPC)G08B21/00 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedFeb 27, 1978Patent grantedJune 30, 1981Term endedJune 30, 1998

Sources & verification

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