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Expired Canadian patentCanada

Automatically-effected move of a subscriber between electronic message service systems in a network

CA 2013379 C · Owner: Lothrop, John Rodney · Inventors: Yuen-Chi Lo, Stella; Spearman, Steven Glenn; Lothrop, John Rodney

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

Abstract, In a network (10) of voice-mail message service systems (12-14) each system, includes an arrangement (22) for automatically moving the serving of one or moresubscribers from itself to another system. In response to administrator (29) input the source system retrieves each moving subscriber's mailbox (200) contents translates subscriber I.D.s appearing therein into universal names and extensionnumbers and transfers the translated contents, including delivery lists (222) and messages (211), to the destination system. The destination system creates a new mailbox for each moved subscriber, translates the universal information into subscriber I.D.s, and populates the new mailbox with …

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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 29, 1990 and granted May 10, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 29, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 29, 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.
FiledMarch 29, 1990
GrantedMay 10, 1994
Term endedMarch 29, 2010
Patent numberCA 2013379 C
Classification (IPC)H04M3/42 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedMarch 29, 1990Patent grantedMay 10, 1994Term endedMarch 29, 2010

Sources & verification

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