Stage platform assembly and method of making same
CA 2094671 C · Owner: Hayden, Michael · Inventors: Hayden, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A stage platform assembly including a corner extrusion member for engagement in a box channel member and a, corner securing member for engagement about tongues of the corner extrusion member at the four corners of sections of the box channel member. A stage platform member such as plywood, secures in a protected fashion to the box channel member. Posts or other elevational members can engage in the corner extrusion member for securing sections of the stage platform together. Locks can also be utilized to secure the stage platform assemblies together.
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 April 22, 1993 and granted August 7, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 22, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 22, 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.