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Expired Canadian patentCanada

Combined above and below grade dwelling with marine habitat

CA 1315514 C · Owner: Levy, Jacques S. · Inventors: Levy, Jacques S.

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 building installation includes a multi-level development with several stacked levels each offering a plurality of adjacent units suitable as individual offices, residential or the like units Certain of the lowermost levels may be constructed below or at grade, and if below grade, then within an excavation that extends immediately adjacent the lowermost levels and includes ? containment for water and adapted to provide a habitat for marine life. Windows in the wall of at least one of the levels juxtaposed the water containment permit direct observation of the marine life while walkways and stairways exteriorly of both sides of the building levels allow ready movement of installation …

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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 April 6, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 6, 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.
FiledJune 12, 1989
GrantedApril 6, 1993
Term endedApril 6, 2010
Patent numberCA 1315514 C
Classification (IPC)E02D27/00

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedJune 12, 1989Patent grantedApril 6, 1993Term endedApril 6, 2010

Sources & verification

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