Cancelling circuit and transmission system
CA 1296439 C · Owner: Kabushiki Kaisha Myukomu · Inventors: Kuroda, Kiyoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is a transmission system in which there are provided a bridge circuit in which a balanced condition is provided in an entire frequency band usable for a wire transmission line or a portion thereof and a, cancelling circuit in which a simultaneous two-directional communication is enabled by using the same frequency or the frequency adjacent thereto, and there are provided said cancelling circuits at both terminal devices opposite to each other through a transmission line thereby enabling, said simultaneous two-directional communication.
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 February 25, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 25, 2009.
- 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.