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Expired Canadian patentCanada

Lens shutter camera including zoom lens

CA 1331925 C · Owner: Ohkubo, Hideki · Inventors: Kondoh, Shigeru; Nakamura, Susao; Kohmoto, Shinsuke

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A lens shutter type of camera is disclosed in which a zoom lens is positioned in a lens block (1) which has a sector gear (15) rotatably associated with the lens block and with a rotatable cam ring (14). The cam ring and sector gear are rotatable in a substantially constant axial position. A movable finder optical assembly (8) and a movable strobe assembly (9) are movable in association with movement of the zoom lens. The zoom lens is movable between an extreme telephoto position and an extreme wide angle position, as well a into a fully collapsed lens position beyond the extreme wide angle position and a macro or closeup photographing position beyond the extreme telephoto position. When …

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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 September 13, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 13, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 12, 1987
GrantedSeptember 13, 1994
Term endedSeptember 13, 2011
Patent numberCA 1331925 C
Classification (IPC)—

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedMay 12, 1987Patent grantedSep 13, 1994Term endedSep 13, 2011

Sources & verification

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