Release device for multi glazing air cushon
CA 2128785 A1 · Owner: Dunn, Kenneth R. · Inventors: Dunn, Kenneth R.; Dunn, Carole Anne
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A release device for an air cushion or thermal insulation barrier of a double or multi glazed glass unit comprises interfitting first and second members which are movable relative to one another, the first member having associated therewith a pin or striker which is movable with the first member from an inoperative position to an operative position to penetrate one or more glass panels of the unit, the device including means to enable release of an air cushion or thermal insulation barrier of said glazed unit. The device, which may include one or more springs, may be mounted on support structure for movement from an inoperative position to an operative position and, means will be included …
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 January 27, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 27, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 27, 2015.
- 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.