Buildings for harsh environments
CA 1290127 C · Owner: Wallhead, Malcolm · Inventors: Wallhead, Malcolm
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A building for use in harsh environments where drift materials, such as snow, tend to collect against exterior walls. One or more exterior walls formed of wall panels extend upwardly from a base perimeter of the building and, provide a building exterior surface. The surface curves outwardly and upwardly adjacent the base perimeter so that the exterior walls have an undercut region adjacent that base perimeter. The building is portable, and can be dismantled when not being used.
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
- Granted October 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 2008.
- 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.