Patent
1978-04-05
1980-08-26
Moffitt, James W.
H04R 2300
Patent
active
042197058
ABSTRACT:
Apparatus for use in producing sound waves directly from electrical-acoustical and thermal acoustical energy. The invention embodies precisely controlled large volume plasmas which are capable of radiating very high levels of sound energy.
REFERENCES:
patent: 3022385 (1962-02-01), Panay
patent: 3185778 (1965-05-01), Giannini et al.
patent: 3476887 (1969-11-01), Seligson et al.
patent: 3516286 (1970-06-01), Babcock et al.
Moffitt James W.
Smith Donald P.
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