Collapsible window flange apparatus
CA 2015386 C · Owner: Plummer, David D. · Inventors: Plummer, David D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved detachable nailing flange construction for window and door frames is disclosed. The flange configuration allows the flange to be rotated between collapsed and operative extended positions while, retainably attached to the frame. When collapsed the, flange is protected by the frame for shipment and handling. Means are provided for locking the flange into its extended position and for providing a weathertight seal with the frame. The direction of attachment to the frame can be reversed for selectively adjusting the lateral position at which the flange projects from the frame so as to vary the set-back of the frame relative to the wall in which it is to be installed.
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 25, 1990 and granted October 25, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 25, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 25, 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.