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Expired Canadian patentCanada

An air data system

CA 2213227 C · Owner: Hickmon, Floyd O. Iii · Inventors: Balena, Frank J.; Loschke, Robert C.; Revell, James D.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

The invention is a system for determining the physical characteristics of an incident fluid flow stream over a surface of a vehicle relative to an axis thereof. In detail, the invention includes at least one first pressure sensor (22) mounted on the surface, the at least one first pressure sensor (22) for receiving dynamic pressure signals generated by the convected boundary layer of the fluid flow stream and providing an output signal representative thereof. At least one array (24) of second pressure sensors (24A-24I) is positioned downstream of the at least one first pressure sensor (22) the , second sensors (24A-I) of the at least one array (24) each of said second pressure …

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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 February 28, 1996 and granted May 15, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 28, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 28, 2018.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 28, 1996
GrantedMay 15, 2001
Term endedFebruary 28, 2016
Patent numberCA 2213227 C
Classification (IPC)G01N11/00 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedFeb 28, 1996Patent grantedMay 15, 2001Term endedFeb 28, 2016

Sources & verification

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