Multi-faceted extension pole
CA 2209147 C · Owner: Polzin, Bruce C. · Inventors: Polzin, Bruce C.; Shaffer, Robert A.; Case, Terrance M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pole for supporting a tool includes an elongate body extending along an axis. The elongate body defines a plurality of outwardly facing facets about the axis. The elongate body preferably includes a first tube and a second tube telescopically received within the first tube for adjusting a length of the pole. The two tubes are locked relative to one another by a locking mechanism that is fixedly coupled to the first tube with a detent engaging member that extends from the locking mechanism into engagement with a detent defined by the first tube. The locking mechanism preferably comprises a collet which is threadably coupled to a chuck that defines a plurality of outwardly facing facets. …
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 June 27, 1997 and granted August 6, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 27, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 27, 2019.
- 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.