Method and apparatus for apportioning call charges
CA 1136302 A · Owner: Western Electrtic Company, Incorporated · Inventors: Zarouni, Alfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, Apparatus is disclosed for apportioning charges on calls originating from coin telephones. At the end of the initial talking period which was paid for by the coin station, an overtime signal is sent to the called station. The called station signals if it will accept overtime charges and recognizing the signal from the called station the control equipment prepares a bill for the overtime to be assessed to the called 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 November 23, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 23, 1999.
- 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.