Bee nest hole cutter
CA 2083995 A1 · Owner: Roy, Paul F. · Inventors: Roy, Paul F.; Fortier, Antoine S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A polished circular hole cutter having an elongate tubular body member with a heat treated cutterhead in the form of a cylindrical ring connected at one end and a fastening means connected at the other end. The inner diameter of the cylindrical ring being less than the inner diameter of the elongate tubular body member at the one end and the outer diameter of the cylindrical ring being greater than the outer diameter of the elongate tubular body member at the same one end. The free end of the cylindrical ring has a chamfered sharp edge for cutting smooth holes in a polystyrene bee nest block or the line in a clean and expiditious manner.
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 November 27, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 27, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 27, 2014.
- 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.