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Expired Canadian patentCanada

Pre-fabricated dome-shaped structure

CA 1320809 C · Owner: Nania, Daniela · Inventors: Nania, Daniela

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

Abstract, A prefabricated building structure having a domeshaped configuration and which is made from a plurality of insulating panels is described. Adjacent panels are connected together by means of a locking device and supporting gasket located at the edges of adjacent panels.

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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

  • Granted August 3, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 3, 2010.
  • 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, 1989
GrantedAugust 3, 1993
Term endedAugust 3, 2010
Patent numberCA 1320809 C
Classification (IPC)E04B1/32

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedMarch 1, 1989Patent grantedAug 3, 1993Term endedAug 3, 2010

Sources & verification

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