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Expired Canadian patentCanada

Internal shield for trough-type reflector

CA 1165293 A · Owner: Wide-Lite International Corporation · Inventors: Hernandez, Jose A.

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

A lighting fixture having a trough-type reflector and further having planar end reflectors, such fixture also including at least one planar shield parallel to the long axis of the trough-type reflector and having an edge parallel to the aiming axis of the fixture. The shield is undercut to permit light emanations from the lamp to be reflected from the entire trough-type reflector. The shield also includes depending points at the points of contact with the end reflectors, thereby preventing light from being reflected from the end reflectors outside of the shield.

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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 April 10, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 2001.
  • 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 8, 1981
GrantedApril 10, 1984
Term endedApril 10, 2001
Patent numberCA 1165293 A
Classification (IPC)F21V7/00 +1 more

Timeline

Timeline From CIPO dates

1982198419861988199019921994199619982000Application filedOct 8, 1981Patent grantedApril 10, 1984Term endedApril 10, 2001

Sources & verification

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