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Expired Canadian patentCanada

Vehicle tire intended to be fitted with spikes

CA 1280955 C · Owner: Linden, Unto · Inventors: Linden, Unto

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

The present invention provides a vehicle tire to be fitted with spikes. The tire has asymmetric or inhomogeneous regions which are adapted to produce a force component turning the fixed spike, or the sleeve mounted spike so that the fixed spike or the sleeve-mounted spike is arranged at first contact with the road surface to meet the road surface substantially in a perpendicular position.

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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 5, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 5, 2008.
  • 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, 1987
GrantedMarch 5, 1991
Term endedMarch 5, 2008
Patent numberCA 1280955 C
Classification (IPC)B60C11/00

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedNov 9, 1987Patent grantedMarch 5, 1991Term endedMarch 5, 2008

Sources & verification

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