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Expired Canadian patentCanada

Texturized stringer for sliding clasp fastener

CA 1048237 A · Owner: Opti Patent-, Forschungs- Und Fabrikations- Ag · Inventors: Frohlich, Alfons

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

A stringer for a sliding clasp fastener and a sliding clasp fastener assembly which consists of a pair of mutually cooperating stringers and a sliding clasp where the stringer comprises a tape of asynthetics plastics sheet or foil to which the fastener elements are attached and in which the tape includes a sewing-in zone. The fastener elements are shaped to receive and guide a sliding clasp for sliding movement for opening and closing the fastener and a clasp path is provided on the tape for sliding cooperation of the sliding clasp therewith for additional guiding and support of the sliding clasp in its movement. The sewing-in zone is texturized by the addition of material to the surface of …

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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 February 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 13, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedFebruary 13, 1979
Term endedFebruary 13, 1996
Patent numberCA 1048237 A
Classification (IPC)A44B19/00 +1 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedFeb 13, 1979Term endedFeb 13, 1996

Sources & verification

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