Frequency shift rate detector
CA 1064148 A · Owner: United States Government As Represented By The Secretary Of The Army · Inventors: West, Samuel F.; Spencer, David R.; Goldsborough, Robert R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention disclosed relates to a doppler shift rate detector system able to detect the presence of doppler signals exhibiting small magnitudes of doppler shift rate. By means of relatively simple ciruitry including a radio frequency amplifier the system is capable, of detecting doppler signals over a relatively wide frequency band.
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 October 9, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 9, 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.