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Expired Canadian patentCanada

Bulb socket for wedge base bulbs

CA 1306027 C · Owner: Izawa, Takeshi · Inventors: Izawa, Takeshi; Horiuchi, Kazuya; Uchida, Kihachiro

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 bulb socket for wedge base bulbs has installed within a bulb-receiving port formed therein terminals each having a pair of facing holder contacts for holding the base of a bulb, thereby establishing electrical contact. The contact-hold portions of the facing holder contacts are bent such that they project inwardly at a certain position along the length thereof and that they then curve away from each other towards the tips thereof. Upright walls of L-shaped cross-section for guiding between the facing holder contacts the base of a bulb to be inserted are formed off to the rear of the holder contacts in such a manner as to project upwardly above the tip portions of the holder contacts. 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 August 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 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.
FiledApril 18, 1989
GrantedAugust 4, 1992
Term endedAugust 4, 2009
Patent numberCA 1306027 C
Classification (IPC)H01R33/09

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedApril 18, 1989Patent grantedAug 4, 1992Term endedAug 4, 2009

Sources & verification

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