Communications: directive radio wave systems and devices (e.g. – Directive – Position indicating
Patent
1959-07-20
1988-03-22
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Position indicating
342459, 342453, 342 22, G01S 302
Patent
active
047332425
ABSTRACT:
A system for detecting the presence and depth of an object submerged in a medium having transmission characteristic substantially different than the atmosphere by means of receiving radiation from lighting incident to a reflected from the submerged object.
REFERENCES:
patent: 2513279 (1950-07-01), Bradley
patent: 2659882 (1953-11-01), Barret
patent: 2940076 (1960-07-01), Bissett et al.
Blum Theodore M.
ITT Corporation
Twomey Thomas N.
Walsh Robert A.
Werner Mary C.
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