Posture board
CA 2054992 C · Owner: Shields, Mary · Inventors: Shields, Mary
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The posture board according to the present invention is contoured to a spinal mating shape. The board comprises an upper back supporting portion having a leading edge and a lower back supporting portion terminating in a trailing edge. The board has a longitudinally extending sine wave configuration with an up curve at the lower back supporting portion. The board further has a side to side concave curvature defining a trough like center region and upwardly turned outside edges. The center region along at least part of the upper back supporting portion and at the trailing edge is in contact with the supporting surface on which the posture board is used. The up curve defines a gap beneath 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 November 5, 1991 and granted January 14, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 5, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 5, 2013.
- 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.