Frequency shift rate detector
CA 1048132 A · Owner: The United States Government As Represented By The Secretary Of The Army · Inventors: Spencer, David R.; Goldsborough, Robert R.; West, Samuel F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Aabstract of the Disclosure, The invention disclosed relates to a doppler shift rate detector system for detecting the presence of doopler signals exhibiting small magnitudeo of frequency shift rate. The primary application of the novel detector system is in the detection and identification of hellistic missiles which employ radial command - doppler type guidance systems. By means of relatively simple circuitry the novel device is capable of solving the intercept problem over a relatively wide frequency band in the absence of reference frequency.
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
- Granted February 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 6, 1996.
- 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.