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Expired Canadian patentCanada

Portable cushioned floor system

CA 1307640 C · Owner: Koller, Gregory V. · Inventors: Koller, Harold A.; Koller, Gregory V.

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 portable cushioned floor system utilizes a modular construction in which each floor module is enclosed with a lower floor plate that protects the flexible resilient cushioning layer during transport and installation and after installation. The lower floor plate is attached to a floor-supporting upper plate with fasteners that maintain a maximum spacing yet permit full flexibility of the intermediate cushioning layer.

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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 September 22, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 22, 2009.
  • 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 13, 1989
GrantedSeptember 22, 1992
Term endedSeptember 22, 2009
Patent numberCA 1307640 C
Classification (IPC)E04F15/22 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedJan 13, 1989Patent grantedSep 22, 1992Term endedSep 22, 2009

Sources & verification

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