Flush round rod
CA 2111766 C · Owner: Gibbons, John Robert · Inventors: Gibbons, John Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A one piece, flush round rod is disclosed. The rod is used for reciprocal action in a well casing in pumping fluids from a production well. The rod has two connectors, a female threaded socket at one end and a male threaded pin on the other end for facilitating the axial connection of a series of rods. The outside diameter of the connectable ends is no greater than the maximum diameter of the rod itself.
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 December 17, 1993 and granted December 7, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 17, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 17, 2015.
- 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.