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Expired Canadian patentCanada

Two part interdental immobilization device

CA 1317517 C · Owner: Divis, Boris · Inventors: Divis, Boris; Mccolgan, Colin

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 interdental immobilization device consisting of a two part fixture; namely, nut and a longitudinal deformable shaft with a helical portion at the end that transforms into a smooth cylindrical portion that terminates into a pointed tip. The nut is preferably made of nylon and formed as a truncated cone with an aperture extending from its base through the apex of the cone. The aperture preferably is a smooth bore but may be stepped so as to have a major bore communicating with the apex of the truncated cone, and a minor bore extending through the nut to the base. The diameter of the major bore is sized preferably to the exterior diameter of the helical thread while the minor bore is sized …

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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 May 11, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 11, 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.
FiledFebruary 28, 1989
GrantedMay 11, 1993
Term endedMay 11, 2010
Patent numberCA 1317517 C
Classification (IPC)A61F5/37

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedFeb 28, 1989Patent grantedMay 11, 1993Term endedMay 11, 2010

Sources & verification

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