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Expired Canadian patentCanada

Multiple independent named call-coverage paths

CA 2200504 C · Owner: Blondin, Douglas J. · Inventors: Baker, Stephen A.; Blondin, Douglas J.

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 improved call-coverage arrangement (106) allows a principal (120) to program (administer) and name multiple independent call-coverage paths (211) for the principal's telephone number. Selection of an individual call-coverage path for an individual call to the principal's telephone number depends either on which one of the call-coverage path is active (221) or on which one of the call-coverage path's selection criteria (212) are matched by the parameters of the call. The selection criteria are likewise programmable by the principal. The principal remembers and accesses (for administration) individual call-coverage paths by name (220).

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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 March 20, 1997 and granted February 1, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 20, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 20, 2019.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 20, 1997
GrantedFebruary 1, 2000
Term endedMarch 20, 2017
Patent numberCA 2200504 C
Classification (IPC)H04M3/46 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedMarch 20, 1997Patent grantedFeb 1, 2000Term endedMarch 20, 2017

Sources & verification

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