Openable roof apparatus
CA 2013360 C · Owner: Muramoto, Hiroki · Inventors: Muramoto, Hiroki; Sugizaki, Kenichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an openable roof apparatus for a space a first, and a second movable roof structures have their respective both ends which are supported respectively by a pair of stationary support structures for movement therealong. A pair of guide arraignments are arranged respectively on the pair of stationary support structures. The first and second movable roof structures are movable toward and away from each other along the guide arrangements. The first movable roof structure includes a plurality of movable roof units having their respective axes which extend perpendicularly to the guide arrangements. The first and second movable roof structures are movable between a closed position where 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 March 29, 1990 and granted May 17, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 29, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 29, 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.