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Expired Canadian patentCanada

Flexible housing

CA 2018171 C · Owner: W. L. Gore & Associates, Inc. · Inventors: Martin, James Duncan Shaw

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

The flexible housing for use in protecting one or more, microwave transmission lines in a pressurised environment comprises a conduit (10) contained within a protective outer jacket (16). The conduit (10) is constructed of a plurality of conduit segments (18) each segment having an opening (28) therethrough the, segments (18) being arranged in series and caused to abut adjacent segments in such a way that the opening (28) through each segment (18) is in communication with the openings through each of the adjacent segments so as to provide a passage to contain a microwave transmission line. Each segment (18) is flexibly linked to its adjacent segments by coupling means (34).

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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 June 4, 1990 and granted October 25, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 4, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 4, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 4, 1990
GrantedOctober 25, 1994
Term endedJune 4, 2010
Patent numberCA 2018171 C
Classification (IPC)H02G3/04

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedJune 4, 1990Patent grantedOct 25, 1994Term endedJune 4, 2010

Sources & verification

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