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Expired Canadian patentCanada

Sealing strip

CA 1289377 C · Owner: Tschudin-Mahrer, Rolf · Inventors: Tschudin-Mahrer, Rolf

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

The invention concerns a joint sealing strip (D) consisting of open-cell precompressed foam material with which strip there is coordinated a foil (4) joining in the restoring of the foam material and the invention suggests, specifically for optimizing the laying of the strip in a sealing manner that, the foil (4) be fashioned as an intermediate layer which is areally bonded to the foam material layers (1), between these layers. (Figure 2)

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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 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 24, 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.
FiledDecember 12, 1986
GrantedSeptember 24, 1991
Term endedSeptember 24, 2008
Patent numberCA 1289377 C
Classification (IPC)B32B3/00 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedDec 12, 1986Patent grantedSep 24, 1991Term endedSep 24, 2008

Sources & verification

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