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Expired Canadian patentCanada

Method for locating application records in an interactive service database

CA 1340789 C · Owner: Prodigy Services Company · Inventors: Dalsass, Aldo R.; Gordon, Michael L.; Wong, Florence L.

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Abstract From the Canadian patent

A method for locating application records in an interactive-service database is described. The method features steps for creating multiple search tables which represent subsets of the database to be interrogated; for example the applications of an interactive service. In accord with the method steps are provided for arranging the tables with keyword, record locators, indexed to record identifiers. Additionally the method includes steps for providing each table with a unique coding and steps for generating table codes at the user reception system in response to a query for a database record entered with a variety of search strategies; as for example character string, searching approximating …

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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

  • Granted October 12, 1999. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 12, 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.
FiledJuly 17, 1989
GrantedOctober 12, 1999
Term endedOctober 12, 2016
Patent numberCA 1340789 C
Classification (IPC)G06F16/33 +2 more

Timeline

Timeline From CIPO dates

199019931996199920022005200820112014Application filedJuly 17, 1989Patent grantedOct 12, 1999Term endedOct 12, 2016

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