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Expired Canadian patentCanada

Method and apparatus for assisting a propelled flying object during landing and takeoff

CA 2525089 C · Owner: Wolter, Klaus · Inventors: Wolter, Klaus

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

The invention relates to a method for assisting a propelled flying object during landing , and/or takeoff of. For assistance a related to a landing and/or a takeoff area 10, stationary-generated , fluid current is provided in order to introduce energy into the flying object. The , invention likewise relates to an apparatus which has a fluid current , generator 11 for generating the fluid current.

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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 May 26, 2004 and granted July 31, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 26, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 26, 2026.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 26, 2004
GrantedJuly 31, 2012
Term endedMay 26, 2024
Patent numberCA 2525089 C
Classification (IPC)B64F1/36 +1 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedMay 26, 2004Patent grantedJuly 31, 2012Term endedMay 26, 2024

Sources & verification

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