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Expired Canadian patentCanada

Closure for optical fiber connective arrangements

CA 2073481 C · Owner: American Telephone And Telegraph Company · Inventors: Bensel, William Henry, Iii; Cobb, Gary Simpson

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

An optical fiber closure which is particularly suitable for connecting small fiber count cables and for repairs of same includes a longitudinally extending electrical bonding and support member for supporting in-line connections betweenoptical fibers of cable end portions which enter the closure from opposite ends thereof. Each cable end portion extends through a cable and clamping and sealingmeans which is adapted to become secured to a tubular member in which is disposed the support member and which is adapted to provide sealed engagement with the entering cable end portion to prevent the ingress of moisture.

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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

  • Filed July 8, 1992 and granted October 14, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 8, 2012.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 8, 2014.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 8, 1992
GrantedOctober 14, 1997
Term endedJuly 8, 2012
Patent numberCA 2073481 C
Classification (IPC)G02B6/44 +2 more

Timeline

Timeline From CIPO dates

1993199519971999200120032005200720092011Application filedJuly 8, 1992Patent grantedOct 14, 1997Term endedJuly 8, 2012

Sources & verification

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