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Expired Canadian patentCanada

Modular multi-storage building

CA 1286924 C · Owner: Bruns, John H. · Inventors: Bruns, John H.

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

A plurality of modules (66) are connected together to define a multi-story annular building (10) of honeycomb cells (C). The cells (C) of the building are hexagonal in cross-section and taper horizontally as they extend radially inwardly. A turntable/elevator (36) is located in a shaft opening at or near the center of the building (10). A tunnel (48) extends through a side of the building (10). The building includes flotation cells at its bottom some, of which are air tight. Water is pumped into and out from the others, for regulating the vertical position of the building (10) in a body of water. An annular ring (66) of flotation material extends about the building (10) immediately below …

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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 July 30, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 30, 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.
FiledJanuary 17, 1986
GrantedJuly 30, 1991
Term endedJuly 30, 2008
Patent numberCA 1286924 C
Classification (IPC)B63B35/44 +1 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedJan 17, 1986Patent grantedJuly 30, 1991Term endedJuly 30, 2008

Sources & verification

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