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Expired Canadian patentCanada

Measuring system employing a measuring method based on the triangulation principle for the non-contact measurement of a distance from the surface of contoured object to a reference level

CA 1236904 A · Owner: N. V. Optische Industrie "De Oude Delft" · Inventors: Oomen, Gijsbert L.; Beckmann, Leo H.J.F.

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Abstract From the Canadian patent

Measuring system employing a measuring method based on the triangulation principle for the non-contact measurement of a distance from the surface of a contoured object to a reference level. ABSTRACT, An apparatus for the rapid and accurate dimensional inspection of an object. In particular the apparatus is, adapted for the acquisition of object range data. The apparatus includes a source for emitting a slender beam of radiation, first beam guide means for causing the beam to impinge on a desired spot of the object under inspection second beam guide means for causing radiation reflected from the spot of impingement to traverse a predetermined path and a linear radiation-sensitive detector …

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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 17, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 17, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 20, 1984
GrantedMay 17, 1988
Term endedMay 17, 2005
Patent numberCA 1236904 A
Classification (IPC)G01C3/08 +2 more

Timeline

Timeline From CIPO dates

1985198819911994199720002003Application filedJune 20, 1984Patent grantedMay 17, 1988Term endedMay 17, 2005

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