Emergency locating receiver system
CA 1263885 C · Owner: Wren, Paul E. · Inventors: Wren, Paul E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Emergency Locating Receiver System, Abstract A receiver is provided for a distress incident locating telecommunications system. The receiver is a superheterodyne AM receiver which applies the received distress transmissions to a normally unlocked phaselock loop which locks onto the unmodulated carrier signal portion of the distress transmission. The duration of the phaselock loop being locked and unlocked, immediately after being locked are measured and compared -to, predetermined values to find a match. Each of the predetermined values corresponds to an item of information and if a, match is found, the receiver indicates it. The receiver is also capable of extracting audio information …
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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
- Granted December 12, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 12, 2006.
- 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.