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Expired Canadian patentCanada

Prefabricated compact service core

CA 2011308 C · Owner: Skvaril, Joseph · Inventors: Skvaril, Joseph

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Walls of the prefabricated compact service core structure are higher than the total height of the floor wall and ceiling structure of an ordinary one-storey residential building, but lower than the total height of a two-storey building of any kind. The height of the walls is large enough to e.g. accommodate the serviced fixtures of complete main floor bathroom, kitchen and possibly, laundry and utility rooms as well as lower parts of the, same rooms of the second storey of a two-storey structure. On the other hand the height is small enough to make the prefabricated compact service core structure possible to ship on standard low trailers anywhere in the world. The prefabricated compact …

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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 1, 1990 and granted May 5, 1992. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 1, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 1, 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.
FiledMarch 1, 1990
GrantedMay 5, 1992
Term endedMarch 1, 2010
Patent numberCA 2011308 C
Classification (IPC)E04B1/34 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedMarch 1, 1990Patent grantedMay 5, 1992Term endedMarch 1, 2010

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.