Folding display frame for forming column-like structures
CA 2118403 C · Owner: Wichman, William John · Inventors: Wichman, William John; Robertson, David E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A collapsible frame work comprising rectangular frame-like cubicles (10) aligned serially and being pivotally joined at common ends of the cubicles via hubs (27a, 28a 29a) at corners of the, cubicles. Each cubicle has a pair of scissor members (14 18, 20, 22), on opposite sides of the cubicle and also pivotally connected to the hubs (27a, 28a, 29a). A diagonal cross-brace (44) extends from a lower front corner to an upper rear corner of each cubicle and another diagonal cross-brace (46) extends from an upper front corner to a rear lower corner of each cubicle. End support members or end support braces (52, 54) comprising a pair of rigid U-frames (52, 54) affixed to corresponding hubs at the …
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 23, 1993 and granted April 17, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 23, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 23, 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.