Door structure
CA 2285188 A1 · Owner: Groeneveld, Dirk Hugo · Inventors: Groeneveld, Dirk Hugo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A door structure (1) comprises: a first plate (2) serving as fixed frame with an opening (4) enclosed by a peripheral edge (3); and a door (7) connected pivotally to this first plate (2) by at least one hinge construction (5 6) , such that with its peripheral zone (8) the door can co-act sealingly with said peripheral edge (3); which first plate (2) carries a number of peripherally arranged clamps (9), which lamps are simultaneously rotatable by a collective operating mechanism (10) with an operating handle (11) and through rotation can co-act with the peripheral zones (12) of corresponding non-round continuous holes (13) in the door (7), which peripheral zones (12) have for each …
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 1, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 1, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 1, 2020.
- 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.