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Expired Canadian patentCanada

Method and apparatus for introducing a strand into a continuously advancing roving

CA 1091909 A · Owner: Owens-Corning Fiberglas Corporation · Inventors: Eisenberg, Arnold J.; Pierce, Richard H.

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

Method and apparatus for introducing a first strand into a continuously moving second strand are provided by positioning the first strand in spaced relation along the length of the continuously advancing second strand and laterally moving, the first strand to engage the continuously moving second strand such that the first strand is continuously advanced with the second strand.

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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 December 23, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 23, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 30, 1978
GrantedDecember 23, 1980
Term endedDecember 23, 1997
Patent numberCA 1091909 A
Classification (IPC)B65H51/00 +1 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedOct 30, 1978Patent grantedDec 23, 1980Term endedDec 23, 1997

Sources & verification

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