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Expired Canadian patentCanada

Reticular spatial structure

CA 1287961 C · Owner: Bini, Dante · Inventors: Zucchi, Dario; Bini, Dante; Pietrogrande, Stefano

CIPO record

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

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Abstract From the Canadian patent

A reticular spatial structure comprising a plurality of perimetral rod-like elements which are associable at their, ends, with perimetral nodes; a plurality of variable-length rod-like elements hinged to connecting nodes having a spherical contact surface adapted to allow the rotation of at least part of the variable-length rod-like elements both about the axis of said elements and with respect to the geometrical center of the various nodes for the extension, of the variable-length elements during the raising of the framenwork which is preassembled on a base plane. A connecting node comprises a lower plate and an upper plate securing a covering membrane, which can be fixed to a rocker …

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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 27, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 27, 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.
FiledJune 3, 1987
GrantedAugust 27, 1991
Term endedAugust 27, 2008
Patent numberCA 1287961 C
Classification (IPC)E04B1/34 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedJune 3, 1987Patent grantedAug 27, 1991Term endedAug 27, 2008

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