Buoy for attachment to the net line of a fishing net
CA 2050810 A1 · Owner: Lengefeld, Ralf M. · Inventors: Lengefeld, Ralf M.; Lengefeld, Ralf M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In order to change defective buoys on the net line of a fishing net and to change the spacing between the buoys threaded onto the net line it has, hitherto been necessary to release the net line from the net and to re-secure it to the net after re-arranging the buoys thus to re-tie it. This is a very, time-consuming task which can now be avoided by use of the novel buoy. This novel buoy consists of two identical portions thus of two halves, which, engage against the net line and which can be assembled together effortlessly at the desired location for the complete buoy. To connect the halves a, clamping member disposed to surround the barrel-shaped buoy in a groove can be used.
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 September 6, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 6, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 6, 2013.
- 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.