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Expired Canadian patentCanada

Gauging surfaces by remotely tracking multiple images

CA 1059752 A · Owner: United Technologies Corporation · Inventors: Molden, Frederick P.; Lowrey, Orvey P. Jr.; Waters, James P.

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Abstract From the Canadian patent

A system for measuring the surface contour of an object by tracking the image of a spot of radiation focused on the surface is disclosed. The radiation spot is imaged on a plurality of suitable detectors which are remote to the surface and connected electrically in parallel. Continuous data on the contour of the surface is provided even though irregularities on the surface interfere with the scattered radiation propagating along the line of sight to one of the detectors. This highly accurate system is servocontrolled and can be automated for recording, storing or displaying data. - 1 -

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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 August 7, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 7, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedAugust 7, 1979
Term endedAugust 7, 1996
Patent numberCA 1059752 A
Classification (IPC)G01B11/24

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedAug 7, 1979Term endedAug 7, 1996

Sources & verification

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