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Expired Canadian patentCanada

String-shaped indication lamp

CA 1298609 C · Owner: Sho-Bond Construction Co. Ltd. · Inventors: Yoshinaga, Tatsuro

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

A string-shaped indication lamp wherein a plurality of light-emission bodies comprising light-emitting diodes embedded in a light transmissible resin are connected with suitable intervals using electrically insulated lead wires while covering the lower faces of the light-emission bodies and parts of outer peripheries of the light-emission bodies with an insulating material, and step parts are formed around the outer peripheries of the light-emission bodies.

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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 7, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 7, 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.
FiledDecember 21, 1987
GrantedApril 7, 1992
Term endedApril 7, 2009
Patent numberCA 1298609 C
Classification (IPC)H01L31/02

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedDec 21, 1987Patent grantedApril 7, 1992Term endedApril 7, 2009

Sources & verification

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