Communication system conferencing arrangement
CA 1093194 A · Owner: Western Electric Company, Incorporated · Inventors: Van Ornum, James H.; Weiss, Carl D.; Fenton, Francis M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A communication conferencing arrangement is disclosed which relies upon the use of a plus/minus (+/-) nonlocking button followed by the operation of a button associated with any other line appearing at the station. If the operated line button is associated with a currently active line that line will be removed from the conference. If however, the operated button is associated with a nonactive line (held or idle) then that line will be added in conference fashion, with the communication leads of the enabling station. Provision is made to allow any number of added connections up to a preset maximum number at any station.
Read the whole patent
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 January 6, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 6, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.