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Expired Canadian patentCanada

Log measuring apparatus and method

CA 1329265 C · Owner: Davis, Richard Brian · Inventors: Davis, Richard Brian

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

There is described an improved apparatus for measuring the length of individual items in a group of items so, arranged together in bundles, that access to or vision of said individual items is limited to the viewing of their ends, said apparatus including two sets of stereocameras for photographing each visible end of the individual items thus capturing two film images of each such visible end and an analyzer for analysing the film images so as to make accurate length determinations.

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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 May 3, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 3, 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.
FiledJuly 28, 1988
GrantedMay 3, 1994
Term endedMay 3, 2011
Patent numberCA 1329265 C
Classification (IPC)G01B11/02 +1 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedJuly 28, 1988Patent grantedMay 3, 1994Term endedMay 3, 2011

Sources & verification

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