Communications relay system
CA 1069180 A · Owner: Gruenberg, Elliot · Inventors: Gruenberg, Elliot
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an electronic system for use in a communication system wherein there is radiated a plurality of information carrying electromagnetic first signals each having a radiating source and each having a radiated electromagnetic first reference signal, a transponder operable for receiving all of the electromagnetic signals and for radiating in response thereto a plurality of information carrying electromagnetic second signals corresponding respectively in information content to the first signals and a plurality of electromagnetic second reference signals corresponding respectively to the first reference signals the transponder, comprising a plurality of first antenna means each having output …
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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
- Granted January 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 1, 1997.
- 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.