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Expired Canadian patentCanada

Noncontact measuring device for cylindrical, elongated objects bent into three-dimensional shapes

CA 1268622 C · Owner: Chuo Electric Manufacturing Co. Ltd. · Inventors: Yogo, Teruaki

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

Noncontact Measuring Device for Cylindrical Elongated Objects Bent into Three-dimensional Shapes, ABSTRACT OF THE DISCLOSURE, A noncontact measuring device has a generally L-shaped pivotable and rotatable probe means to be disposed along a straight portion of an object. Another noncontact measuring device has a rotatable probe means with an inverted L-shape to be disposed along a straight portion of an object. The probe of the former device projects a beam of light while, that of the latter device projects two beams of light. For either measuring device, when the beam or beams of light are being intercepted by the object, coordinates of a predetermined point of the probe means are read by a …

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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 8, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 8, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 3, 1986
GrantedMay 8, 1990
Term endedMay 8, 2007
Patent numberCA 1268622 C
Classification (IPC)G01B11/24 +1 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedDec 3, 1986Patent grantedMay 8, 1990Term endedMay 8, 2007

Sources & verification

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