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Expired Canadian patentCanada

System and method for routing ground-to-air telephone calls

CA 2201559 C · Owner: Berberich, Edward Charles Jr. · Inventors: Berberich, Edward Charles Jr.

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 system for completing calls to a passenger aboard an aircraft. The passenger activates ground-to-air service by accessing a ground-to-air database subsystem that is located on the ground. The passenger gains access to the ground-to-air database by dialing a special service number and entering a Master Personal Identification Number (Master PIN). Once access to the database is obtained the passenger may enter one or, more ground-to-air forwarding parameters which enable the system to forward ground initiated calls directly to the passenger. At anytime after ground-to-air service has been activated, but before it is terminated a person on the ground may initiate a call to the passenger by …

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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 April 2, 1997 and granted June 13, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 2, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 2, 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.
FiledApril 2, 1997
GrantedJune 13, 2000
Term endedApril 2, 2017
Patent numberCA 2201559 C
Classification (IPC)H04M3/42 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedApril 2, 1997Patent grantedJune 13, 2000Term endedApril 2, 2017

Sources & verification

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