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Expired Canadian patentCanada

Ceiling mounted luminaire housing system

CA 1292215 C · Owner: Thomas Industries Inc. · Inventors: Patel, Mahendra 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

of Disclosure, A housing system for ceiling mounted recessed luminaires includes a generally flat, rectangular mounting plate. A circular vertically extending flange extends downwardly from the lower surface of the mounting plate. The diameter of the circular flange is substantially the same as the width of the mounting plate. A cylindrical lamp housing is secured to the mounting plate and extends upwardly therefrom. Mounting plate also has a junction box secured thereto with its largest dimension disposed vertically from the mounting plate. An electronic conduit extends between the junction box and the lamp housing.

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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 November 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 19, 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.
FiledMay 17, 1988
GrantedNovember 19, 1991
Term endedNovember 19, 2008
Patent numberCA 1292215 C
Classification (IPC)F21V21/04

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedMay 17, 1988Patent grantedNov 19, 1991Term endedNov 19, 2008

Sources & verification

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