Adjustable door frame
CA 2015644 C · Owner: Rogers, Harvey E. · Inventors: Rogers, Harvey E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An adjustable door frame has adjustable width jambs and header. Each of the frame elements consists of two elongated components held together with interengaging rails and channels on the two components. In use, the frame elements are adjusted to the desired width and are locked in place with self tapping screws through the rails and channels. This allows the elements to be installed in a door opening in the same way as a fixed width door frame and without the use of screws through the door casing.
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 27, 1990 and granted November 29, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 27, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 27, 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.