Failure responsive alternate amplifier and bypass system for communications amplifier
CA 2129305 C · Owner: Txrx Systems Inc. · Inventors: Kaegebein, Daniel P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A communications amplifier system which includes a primary preamplifier circuit, a secondary preamplifier circuit and a bypass circuit mutually exclusively selectable through a relay switching means which is automatically activated to bypass the primary preamplifier with the secondary preamplifier or the secondary preamplifier with the bypass circuit in the event of malfunction. In the standby mode the, secondary preamplifier is not connected to DC power or RF signal 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 August 2, 1994 and granted January 6, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 2, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 2, 2016.
- 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.