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CA 2502322 A1 · Owner: Schimanz, Gerhard · Inventors: Schimanz, Gerhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A banner (1) which can be dragged by an airplane (2) by means of a drag rope (3), comprising a banner rod (5) which is connected to the drag rope (3) by means of a banner spider (4). Disks (10) acting as trailing wheels are arranged on the banner rod (5) on both sides of the banner (1). The banner rod (5) is held at a distance from the surface of the runway prior to starting off, such that the banner does not lie on the runway as a result of the wind produced by propeller of the airplane (2) thereby enabling the airplane (2) , to start off with a coupled banner (2) without any problem.
Read the whole patent
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 October 9, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 9, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 9, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.