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Expired Canadian patentCanada

Apparatus for producing chopped strands of glass fibers

CA 1267536 C · Owner: Symborski, Alex P. · Inventors: Chappelear, Robert N.; Symborski, Alex P.

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Apparatus for drawing molten streams of glass into filaments and severing the filaments into segments is provided wherein the cot wheel is eccentrically mounted to provide automatic micro-adjustment with respect to the cutter roll, and wherein the cutter roll is releasably secured to provide macro-adjustment to accomodate cot wheels of different diameters.

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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 10, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 2007.
  • 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 25, 1985
GrantedApril 10, 1990
Term endedApril 10, 2007
Patent numberCA 1267536 C
Classification (IPC)C03B37/16 +1 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedOct 25, 1985Patent grantedApril 10, 1990Term endedApril 10, 2007

Sources & verification

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