Broadband signal switching equipment constructed in accordance with field-effect transistor technology
CA 2024871 A1 · Owner: Trumpp, Gerhard · Inventors: Trumpp, Gerhard; Wolkenhauer, Jan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A crosspoint matrix is constructed in accordance with FET technology and includes matrix input lines which lead to matrix output lines at respective crosspoints which matrix output lines each comprise respectively, two signal conductors and having two signal inputs of a differential amplifier to which the two signal conductors of each matrix output line are respectively connectible via a pre-charging transistor to a respective terminal of the operating voltage source the signal conductors of each matrix, output line being respectively connectible to another terminal of the operating voltage source via a respective coupling element that is formed with the series circuit of an input …
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 September 7, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 7, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 7, 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.