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Expired Canadian patentCanada

Periscope-like sighting device

CA 1249463 A · Owner: Contraves Ag · Inventors: Arndt, Klaus; Sanvido, Saverio

CIPO record

Overview

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

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Abstract From the Canadian patent

INVENTORS: KLAUS ARNDT and SAVERIO SANVIDO INVENTION: PERISCOPE-LIKE SIGHTING DEVICE ABSTRACT OF THE DISCLOSURE, A periscope-like sighting device is proposed which comprises an optical system comprising a plurality of elements arranged within a housing for localizing and tracking a target. In order to obtain as great as possible a field of observation the optical system comprising a first deflection prism an, objective lens or lens system, a first beam splitter a second, beam splitter and a second deflection prism is arranged in the housing sloping backward in the direction of incident radiation and in relation to a vertical rear housing wall. A main mirror is associated with the first beam …

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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 January 31, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 31, 2006.
  • 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 27, 1984
GrantedJanuary 31, 1989
Term endedJanuary 31, 2006
Patent numberCA 1249463 A
Classification (IPC)G02B23/08

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedApril 27, 1984Patent grantedJan 31, 1989Term endedJan 31, 2006

Sources & verification

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