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Expired Canadian patentCanada

Method and apparatus for wireless networking

CA 2444643 C · Owner: Bell, Robert S. · Inventors: Brown, William M.; Bell, Robert S.

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

A method and apparatus for wireless networking employs a wireless protocol module (22) and a wireless device interface module (23) for controlling a remote terminal unit whereby the modules (22 23) integrate the remote , terminal unit software and wireless networking application software.

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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 June 12, 2001 and granted November 1, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 12, 2021.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 12, 2023.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 12, 2001
GrantedNovember 1, 2011
Term endedJune 12, 2021
Patent numberCA 2444643 C
Classification (IPC)H04W84/02 +2 more

Timeline

Timeline From CIPO dates

2002200420062008201020122014201620182020Application filedJune 12, 2001Patent grantedNov 1, 2011Term endedJune 12, 2021

Sources & verification

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