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Expired Canadian patentCanada

Mass positioning apparatus for a seismic sensor

CA 2493826 C · Owner: Nanometrics Inc. · Inventors: Ackerley, Nicholas Jason; Hayman, Mark Jonathan Brice; Hayman, Robin Brice

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A mass positioning apparatus for use with seismic sensors is described. The seismic sensor includes axis mechanics including a pivotable boom with a defined point. The mass positioning apparatus comprising: adjustment means for positioning the boom at the point; actuator means for moving the adjustment means; and means for determining a position of the adjustment means relative to an operational range of travel.

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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

  • Filed January 24, 2005 and granted March 25, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 24, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 24, 2005
GrantedMarch 25, 2014
Term endedJanuary 24, 2025
Patent numberCA 2493826 C
Classification (IPC)G01V13/00 +1 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedJan 24, 2005Patent grantedMarch 25, 2014Term endedJan 24, 2025

Sources & verification

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