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Expired Canadian patentCanada

Apparatus for the measurement and non-destructive material testing oflaid pipelines

CA 1307129 C · Owner: Pipetronix Gmbh · Inventors: Goedecke, Hartmut

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

An apparatus for the measurement and non-destructive material testing of laid pipelines in the form of a scraper moved through the pipeline and guided on the inner wall thereof has at least one circular support with sensors arranged on the circumference thereof and at least one pressure-tight casing, which has devices for processing and recording the measured values and the power supply. In order to ensure that the sensors are always at the minimum constant distance and with a constant angular position with respect to the pipe wall, the support is constructed as a cylindrical sleeve made from a rubber elastic material and is provided with an axially, radially and circumferentially regular …

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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 September 8, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 8, 2009.
  • 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 21, 1987
GrantedSeptember 8, 1992
Term endedSeptember 8, 2009
Patent numberCA 1307129 C
Classification (IPC)G01N27/90 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedJuly 21, 1987Patent grantedSep 8, 1992Term endedSep 8, 2009

Sources & verification

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