H.A.A.R.P. (High-Frequency Active Auroal Research Program)https://patents.google.com/patent/US4686605A/enhttps://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=/netahtml/PTO/search-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN/4686605
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