A base station for a frequency hopping tdma radio communication system
CA 2102426 C · Owner: Borg, Lars Uno · Inventors: Borg, Lars Uno
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A base station for a cellular frequency hopping TDMA radio communication system comprises at least two transmitter groups, each containing at least one transmitter connected to individual antennas in an antenna group of a cell. Furthermore means are included for controlled frequency hopping in at least one TDMA channel such that its signal bursts are distributed on different antennas in the antenna group.
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
- Filed March 22, 1993 and granted July 16, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 22, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 22, 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.