Knock-down base for platforms
CA 2033136 C · Owner: Lubinski, Ronald · Inventors: Lubinski, Ronald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A knock-down swing stage base includes a pair of extruded aluminum beams with generally C-shaped cross-sections. The beams are oriented parallel to one another and joined by identical aluminium cross-members. Each cross-member is integrally extruded with paired ribs defining a set of screw receiving passages in a predetermined spacing arrangement. Sets of apertures are formed in the webs of the beams at regular intervals, each set observing the spacing arrangement characteristic of the set of screw-receiving passages. Each cross-member is located with its set of screw-receiving passages simultaneously registered with a set of aperture in one beam and a corresponding set in the other beam. …
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 24, 1990 and granted December 27, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 24, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 24, 2012.
- 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.