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Expired Canadian patentCanada

Portable distress signal device

CA 1252766 A · Owner: Pawlowski, Thomas J. Jr. · Inventors: Pawlowski, Thomas J. Jr.

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

Portable Distress Signal Device, ABSTRACT OF THE DISCLOSURE A portable hand held distress signal device having o casing member for receiving dry cell batteries with the casing having positive and negative terminals and on ON-OFF switch connected in series therewith a, dome member of generally red plastic transparent materail having an end portion for receiving a signal member and an enlarged portion for receiving a control member and an engaging portion for connecting securably with a mating engaging portion of the casing member the control member, including a frame member having respective current terminals for engaging with the terminals of the casing member a buzzer and motor in, the …

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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 April 18, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 18, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 3, 1987
GrantedApril 18, 1989
Term endedApril 18, 2006
Patent numberCA 1252766 A
Classification (IPC)F21V23/06 +2 more

Timeline

Timeline From CIPO dates

1988199019921994199619982000200220042006Application filedNov 3, 1987Patent grantedApril 18, 1989Term endedApril 18, 2006

Sources & verification

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