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Expired Canadian patentCanada

Ice-skate sharpener

CA 1050275 A · Owner: Robinson, Bertrand · Inventors: Robinson, Bertrand

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 ice-skate sharpener comprising a stationary electric motor grinder including a diamond bit carried by an arm pivoted on a support adjacent the grinding wheel to the desired transverse curvature, so that and ice-skate blade can be sharpened with the desired hollow ground. The sharpener further includes a pair of self-centering jaws to clamp the blade of an ice-skate therebettween and pivotally connected to the cuter end of articulated arms themselves pivotally mounted on a support secured to the work bench bench of the sharpening assembly. The level of these arms can be adjusted t bring ice-skate blade carried by the jaws in exact alignment with the pivot of the arm supporting the diamond …

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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 March 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 13, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedMarch 13, 1979
Term endedMarch 13, 1996
Patent numberCA 1050275 A
Classification (IPC)B24B9/04 +1 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedMarch 13, 1979Term endedMarch 13, 1996

Sources & verification

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