Magnetic switch for coaxial transmission lines
CA 2013387 C · Owner: Nelson, Victor · Inventors: Nelson, Victor
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A magnetic switch assembly used for switching input and output signals between coaxial transmission lines connected to a body having a closed cavity inwhich terminals of the lines are exposed. One or more conductive contact members, which are the only moving parts in the cavity bridge one or more pairsof line terminals in closed circuit position. The contact members are moved magnetically from open to closed position and are latched or held failsafe by, stationary permanent magnets or pulsed electromagnets. The contact members are moved to open position by pulsed electromagnets or rotatable permanent magnets. The contact members comprise magnetized strips magnetic strips, or nonmagnetic, …
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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 March 28, 1990 and granted January 2, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 28, 2012.
- 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.