Post and rail system using extrudable plastic posts
CA 2246502 C · Owner: Elsasser, Glenn R. · Inventors: Elsasser, Glenn R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A support for a hollow post of the type used to support horizontal rails for railing or fencing systems and having a, hollow, constant cross-section the support comprising a rigid, support member such as a steel pipe, having upper and lower end portions, the lower end portion adapted to be fixed in vertical position while the upper end portion extends within the hollow post. At least one spacer, preferably extruded from plastic material or aluminum, has a tubular portion with an inner bore sized to snugly receive the rigid support member and has longitudinal protrusions, for example ribs ribs, projecting outwardly from the tubular portion and suitable for firm engagement within internal …
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 4, 1998 and granted December 31, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 4, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 4, 2020.
- 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.