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Expired Canadian patentCanada

Built-in flash system

CA 1319848 C · Owner: Shono, Tetsuji · Inventors: Arai, Akihiro; Shono, Tetsuji

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 built-in flash system is disclosed which includes a housing chamber provided in the upper front of a penta-house of a finder optical system and a casing, provided in the housing chamber and having a flashlight emitter arranged so as to be movable between a projecting position where the casing is projected for light emission and a housing position where the casing is housed in said housing chamber, the casing is arranged to be moved between the projecting position and the housing position by a linkage mechanisms disposed at sides of said built-in flash system.

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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 July 6, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 6, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 13, 1988
GrantedJuly 6, 1993
Term endedJuly 6, 2010
Patent numberCA 1319848 C
Classification (IPC)G03B15/03

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedJan 13, 1988Patent grantedJuly 6, 1993Term endedJuly 6, 2010

Sources & verification

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