Digital fixed radio access system providing local mobility
CA 2133735 C · Owner: Akerberg, Dag E:Son · Inventors: Akerberg, Dag E:Son; Van De Berg, Petrus Hubertus Gerardus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an arrangement for radio communication comprising at least one first station or base station (1), a number of second radio stations (2) and a number of subscriber stations (5), each said radio station (2) comprising at least one digital radio arrangement and first and second means (7, 8) for communication with said first station (1) and with said at least one subscriber station (5) respectively, said first means comprising at least one long range antenna for connection with the first station (1). Said second means (8) comprises at least one antenna for connection with at least one of said subscriber stations (5) and said radio arrangement comprises a radio …
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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
- Filed November 19, 1993 and granted October 1, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 19, 2015.
- 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.