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Expired Canadian patentCanada

Spring electrode

CA 1325249 C · Owner: Pristech, Inc. · Inventors: Neward, Theodore Chester

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

An electrode and carrier assembly is disclosed for attachment to a biological subject, such as a fetus during labor to monitor the fetal heart rate. The electrode structure includes a clip-like body having clamping portions and members adapted to engage cam surfaces within a carrier. The ends of the clamping portions which serve as electrodes are insulated leaving only the tips exposed. While the electrode structure is housed within the carrier the clamping portions are held apart. Attachment is accomplished by placing the carrier against the subject and moving the members into engagement with the cam surfaces, whereby the cam surfaces eject the electrode structure from the carrier by 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 December 14, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 14, 2010.
  • 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 9, 1988
GrantedDecember 14, 1993
Term endedDecember 14, 2010
Patent numberCA 1325249 C
Classification (IPC)A61B5/04 +1 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedNov 9, 1988Patent grantedDec 14, 1993Term endedDec 14, 2010

Sources & verification

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