Duplex microwave radio system
CA 1113155 A · Owner: Siemens Aktiengesellschaft · Inventors: Kloeber, Peter; Becker, Friedbert; Biethan, Gunter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a duplex microwave radio system which serves to transmit analogue or digital data between mobile transmitting-receiving stations which move along given paths and fixed transmitting-receiving relay stations which are arranged at given intervals along these paths and operate in both directions of the path. The relay stations on a path are connected to a main central transmitting-receiving station. Such systems are of use in, for example, railway systems. The invention provides that each mobile and/or relay station comprises a transmitting section including a microwave oscillator (3), frequency stabilisation and modulation means (4) and, a receiving section including a …
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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 November 24, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 24, 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.