Coupling arrangement
CA 2228299 C · Owner: Telefonaktiebolaget Lm Ericsson · Inventors: Roos, Sture Gosta
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a matrix switching device (1) having a plurality of contact devices positioned in selected crosspoints between rows and columns with each contact device including at least one movable contact element (2a). The device further includes a plurality of row-related reciprocatingly , movable first rods (3) a plurality of column-related reciprocatingly movable second rods (4, 4'), a plurality of electrically insulating balls (2h 2g) of , which each is allotted a selected crosspoint and is movable in response to movement of one or both of the rods (3 4). A thin module unit is obtained , since the movable contact element is comprised of a contact spring mounted on 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
- Filed August 1, 1996 and granted October 17, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 1, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 1, 2018.
- 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.