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Expired Canadian patentCanada

Vertical shade assembly

CA 1305043 C · Owner: Hunter Douglas Inc. · Inventors: Colson, Wendell B.

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

A vertical shade assembly extendable and retractable in a horizontal direction and including a pleated shade member suspended from an upper traversing track a, shade guide mechanism extending through the assembly and a, braking mechanism operatively connected to the shade guide mechanism for creating a braking force to hold the shade member against movement.

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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 July 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 14, 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.
FiledOctober 5, 1988
GrantedJuly 14, 1992
Term endedJuly 14, 2009
Patent numberCA 1305043 C
Classification (IPC)E06B3/94 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedOct 5, 1988Patent grantedJuly 14, 1992Term endedJuly 14, 2009

Sources & verification

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