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Expired Canadian patentCanada

Bone cutting guide and methods for using same

CA 1306649 C · Owner: Johnson, Wesley · Inventors: Johnson, Wesley

CIPO record

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Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Cutting guide for a bone saw used to assure accurate bone cuts in implantation of prostheses and osteotomies. A cutting guide has a main body having guide elements that include a pair of guide surfaces that engage opposite sides of a saw blade. The guide surfaces guide the blade in a predetermined plane during the cutting process. In each pair of guide surfaces, the surfaces are spaced from one another along the plane a sufficient distance to enable the saw blade to pivot out of said plane away from engagement with at least one of the guide surfaces through an angle of at least 15°. The cutting guide also includes means for attaching the guide to a bone surface to orient the guide elements …

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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 August 25, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 25, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 23, 1987
GrantedAugust 25, 1992
Term endedAugust 25, 2009
Patent numberCA 1306649 C
Classification (IPC)A61B17/14 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedDec 23, 1987Patent grantedAug 25, 1992Term endedAug 25, 2009

Sources & verification

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