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Expired Canadian patentCanada

Xenon-metal halide lamp particularly suited for automotive applications

CA 1301238 C · Owner: Davenport, John Martin · Inventors: Bergman, Rolf Sverre; Davenport, John Martin; Hansler, Richard Lowell

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Abstract From the Canadian patent

A lamp containing a fill of xenon, mercury and metal halide is disclosed which serves as a light source for lighting applications and is particularly suitable for-automotive forward lighting applications. The xenon ingredient operates to provide for instant light necessary for automotive applications whereas, the mercury and metal halide ingredients operate to provide for a long life, high efficiency lamp relative to either a xenon or tungsten lamp. The dimensions of the xenon-metal halide lamp of the present invention are approximately three-fifths (3/5) of those of a typical tungsten lamp utilized for automotive forward lighting applications. The reduced dimensions of the xenon-metal …

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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 May 19, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 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.
FiledFebruary 2, 1989
GrantedMay 19, 1992
Term endedMay 19, 2009
Patent numberCA 1301238 C
Classification (IPC)H01J61/16 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedFeb 2, 1989Patent grantedMay 19, 1992Term endedMay 19, 2009

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