Bi-fold screen door
CA 2054601 A1 · Owner: Wallace, Ken · Inventors: Wallace, Ken
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In order to achieve these and other objects of the invention, the present invention provides an improved bifold screen door which includes a pair of elongated panels having central rectangular mesh screen portions. The door panels are connected by a vertically extending central piano-type hinge. A longitudinal edge of one of the panels is secured by a hinge in a vertically extending notch formed in a door jam. A free longitudinal edge of the opposite door panel is received in a juxtaposed notch in the door jam, when the door is in a closed position. The door is intended for use in conjunction with a solid door having opposite vertical edges receivable in a second pair of juxtaposed notches …
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 October 31, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 31, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 31, 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.