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Expired Canadian patentCanada

Methods and apparatus for exhausting gases from gas turbine engines

CA 2502374 C · Owner: Wollenweber, Gary C. · Inventors: Wollenweber, Gary C.

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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 exhaust assembly (52) for a gas turbine engine (40) which includes a turbine rear frame (75). The exhaust assembly comprises an engine exhaust nozzle (76) extending downstream from the turbine rear frame and an infrared suppression system (72) coupled in flow communication with said engine exhaust nozzle for channeling exhaust gases discharged from said exhaust nozzle. The suppression system comprises a flow channel (90) coupled to an access door (12) movable with the access door from a closed position to an open position wherein the access door forms a work platform. The suppression system facilitates suppressing an exhaust infrared signature of the gas turbine engine.

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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 March 24, 2005 and granted February 12, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 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.
FiledMarch 24, 2005
GrantedFebruary 12, 2013
Term endedMarch 24, 2025
Patent numberCA 2502374 C
Classification (IPC)B64D33/04 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedMarch 24, 2005Patent grantedFeb 12, 2013Term endedMarch 24, 2025

Sources & verification

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