Mobile stage construction
CA 2204577 A1 · Owner: Bernstein, Patrik L. T. · Inventors: Bernstein, Patrik L. T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Mobile scenery arrangement comprising a tubular construction (1) forming a substantially vertical left side (5) and a substantially vertical right side (6), the left and right sides being joined to at least one upper front curtain rod (7) and at least one upper rear back-drop rod (8) via corner members (4), wherein at least one of the ends of said rods (7 8) is, provided with a cord-tensioning device (10) arranged to steplessly stretch a cord (11) between the two ends of the rod said cord (11) being, arranged to displaceably carry curtains or back-drop.
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 May 6, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 6, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 6, 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.