Window operator
CA 2177895 C · Owner: Johnson, Douglas G. · Inventors: Tucker, Daniel G. (Deceased); Anderson, Todd A.; Johnson, Douglas G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An operator for controlling the movement of a window sash relative to a frame with a raised surface along a frame sill thereof wherein, the operator includes a base having a first support surface an aperture and, a bottom exterior surface with a slot therein the base attached to the frame, with the raised surface fitting substantially within the slot. The operator alsoincludes a cover secured to the base and having a second support surface with a hole therethrough defining an internal shoulder the second support, surface mating with the first support surface. A post extends from the cover and through the aperture in the base when the operator is assembled. An arm is pivotally secured to 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 May 31, 1996 and granted May 28, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 31, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 31, 2018.
- 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.