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Expired Canadian patentCanada

Molded slide fastener coupling element

CA 1135031 A · Owner: Textron Inc. · Inventors: Moertel, George B.

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

There is provided a molded coupling element for a slide fastener, comprising a body portion for being secured to an edge portion of one carrier tape of a slide fastener and a locking portion including a head portion and a neck portion extending from the body portion for interlocking with locking portions of mating coupling elements on an opposite carrier tape of a slide fastener. In order to increase the head bearing area without decreasing flexibility the head portion includes locking protrusions having distal edges extending perpendicular to the one carrier tape for providing increased bearing area with mating locking protrusions of mating coupling elements, and the neck portion of the …

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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 November 9, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 9, 1999.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 24, 1980
GrantedNovember 9, 1982
Term endedNovember 9, 1999
Patent numberCA 1135031 A
Classification (IPC)A44B19/00 +1 more

Timeline

Timeline From CIPO dates

1981198319851987198919911993199519971999Application filedMarch 24, 1980Patent grantedNov 9, 1982Term endedNov 9, 1999

Sources & verification

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