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Expired Canadian patentCanada

Method of rapidly assessing damage to outside loop plant

CA 2114154 C · Owner: Bushnell, William Jackson · Inventors: Bushnell, William Jackson

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

assessment, From time-to-time, the telephone outside loop plant is severely damaged as a result of some catastrophe, such as a hurricane. To facilitate the repair and identification of such damage, a facility is provided which rapidly assesses andoutputs to a terminal the extent of such damage. The rapid assessment is made possible by taking advantage of information that may be obtained from a number of different sources, in which the extent of the damage may be determined from suchinformation.

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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 January 25, 1994 and granted December 2, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 25, 2014.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 25, 2016.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 25, 1994
GrantedDecember 2, 1997
Term endedJanuary 25, 2014
Patent numberCA 2114154 C
Classification (IPC)H04M3/24 +2 more

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedJan 25, 1994Patent grantedDec 2, 1997Term endedJan 25, 2014

Sources & verification

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