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Expired Canadian patentCanada

Method and apparatus for connecting a wireless lan to a wired lan

CA 2129197 C · Owner: Ibm Canada Limited-Ibm Canada Limitee · Inventors: Cheung, Roger Y.M.; Mckay, Danny Neil; Reissner, Peter E.

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

An internetworking node for providing internetworking services for mobile wireless nodes is disclosed. Each mobile wireless node is associated with at the most one internetworking node. Each mobile wireless node selects which internetworking node it will associate with. The internetworking node will then act for all wireless nodes associated to it in relaying messages between wireless nodes or between a wired lan and the wireless nodes.

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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 July 29, 1994 and granted November 9, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 29, 2014.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 29, 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 29, 1994
GrantedNovember 9, 1999
Term endedJuly 29, 2014
Patent numberCA 2129197 C
Classification (IPC)H04L12/28

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedJuly 29, 1994Patent grantedNov 9, 1999Term endedJuly 29, 2014

Sources & verification

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