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Expired Canadian patentCanada

Single layer pin seam fabric having perpendicular seaming loops and method

CA 1319289 C · Owner: Penven, Patrick H. · Inventors: Penven, Patrick 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 papermakers fabric is made with a woven base fabric having two ends. The base fabric includes a single layer of machine direction yarns having a system of cross machine direction yarns interwoven in a repeat pattern. At each end of the base fabric, the machine direction yarns are formed into a series of loops with an angular orientation so that the base fabric ends can be joined by intermeshing the respective end series of loops and inserting a pintle through the intermeshed loops. The angular orientation of the loops on one end of the base fabric are formed in the opposite direction from the angular orientation of the loops of the other end of the fabric when said respective end loops …

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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 June 22, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 22, 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.
FiledMay 1, 1989
GrantedJune 22, 1993
Term endedJune 22, 2010
Patent numberCA 1319289 C
Classification (IPC)D21F1/00 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedMay 1, 1989Patent grantedJune 22, 1993Term endedJune 22, 2010

Sources & verification

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