Door brace
CA 2251083 C · Owner: Elliott, James · Inventors: Elliott, James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A door brace (5) for bracing a door against a fixed object and for controlling the opening and closing of the door includes an elongate member (10 15) of , variable length, extendable and rectractable between a first length and a second length; a first anchor means (110) constructed and arranged to secure a first end of the elongate member to a door; a second anchor means (70) constructed and arranged to secure a second end of the elongate member to a fixed object; and control means for forcefully extending the elongate member from the first and toward the second length. The door is at least partially open when the elongate member is at the first length and closed when the , elongate …
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 10, 1997 and granted August 14, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 10, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 10, 2019.
- 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.