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Expired Canadian patentCanada

Stitchless reinforced corner structure for cloth

CA 1283018 C · Owner: Liu, Cho · Inventors: Liu, Cho

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 stitchless reinforced corner structure for cloth includes a foldable interlining member made of tough plastic material and integrally formed by injection a, pair of folding lines formed on a surface of the interlining member defining a middle region a left, region and a right region, a pair of annular openings respectively provided in an upper portion of the middle region and in an upper potion of the left region a pair, of stubs provided at a lower portion of the middle region, and orifices corresponding to the stubs formed respectively on the left and right region so that, when, the left and right region are folded over the middle region, the orifices and the stubs are closely engaged …

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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 16, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 16, 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
GrantedApril 16, 1991
Term endedApril 16, 2008
Patent numberCA 1283018 C
Classification (IPC)B32B3/10

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedJune 3, 1987Patent grantedApril 16, 1991Term endedApril 16, 2008

Sources & verification

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