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Expired Canadian patentCanada

Warning light device

CA 1298256 C · Owner: Killinger, Erich · Inventors: Killinger, Erich

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

The invention relates to a warning light device having a directional warning panel to regulate traffic which is attached, in a vertical position in the vicinity of the back of a vehicle and on which traffic symbols for following traffic can be displayed by means of controllable electric luminous elements. An autonomous mobile warning light device with great versatility of display is attained in accordance with the invention by providing that the warning panel is embodied as a controllable optical fiber display matrix having a plurality of traffic symbols and is attached or attachable to the roof extending as, far as the back, of a motor vehicle; that it is supplied or suppliable by the …

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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 March 31, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 31, 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.
FiledSeptember 26, 1989
GrantedMarch 31, 1992
Term endedMarch 31, 2009
Patent numberCA 1298256 C
Classification (IPC)B60Q7/02 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedSep 26, 1989Patent grantedMarch 31, 1992Term endedMarch 31, 2009

Sources & verification

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