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Expired Canadian patentCanada

Air deflecting means for use with air outlets defined in dropped ceiling constructions

CA 1290970 C · Owner: Anderson, Philip K. · Inventors: Anderson, Philip K.

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 air deflector is disclosed with adjustable brackets for suspending the deflecting shield at variable distances from an air vent positioned within a dropped ceiling. The suspension brackets include a hook for resilient flexible securement with respect to the inverted T-shaped support members of the dropped ceiling as well as a rod having a number of cross members positioned thereon extendable through slots defined in the air deflector for maintaining that deflector at variable distances from the vent defined in the dropped ceiling thereabove. A vane member is included which may be engageable with respect to all another similarly configured vane member such as to be angularly oriented with …

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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 October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 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.
FiledApril 24, 1987
GrantedOctober 22, 1991
Term endedOctober 22, 2008
Patent numberCA 1290970 C
Classification (IPC)F24F13/06 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedApril 24, 1987Patent grantedOct 22, 1991Term endedOct 22, 2008

Sources & verification

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