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Expired Canadian patentCanada

Variably adjustable shoe insert

CA 1232447 A · Owner: Northwest Podiatric Laboratories, Inc. · Inventors: Brown, Dennis N.

CIPO record

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

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Abstract From the Canadian patent

Disclosure herein is an insert for a shoe boot, or, the like which is capable of plural adjustments so as to adapt the insert to the unique physical conformation of the wearer's foot to hold the foot in a neutral axis position substantially at all times, to return a foot into the neutral axis mode automatically and to provide a wide range of support resiliency, and angulation, based on the needs of the user. The device as set forth lends itself to modification for various sports where lateral motion is of primary importance, shock absorption and longitudinal extension of the foot is of paramount importance or for geriatric patients, whereby a single insert and the modifying devices …

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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 February 9, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 9, 2005.
  • 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 18, 1982
GrantedFebruary 9, 1988
Term endedFebruary 9, 2005
Patent numberCA 1232447 A
Classification (IPC)—

Timeline

Timeline From CIPO dates

19831986198919921995199820012004Application filedNov 18, 1982Patent grantedFeb 9, 1988Term endedFeb 9, 2005

Sources & verification

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