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Audio source localization
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Patent number 9,025,415
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Issue date May 5, 2015
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Koninklijke Philips N.V.
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Rene Martinus Maria Derkx
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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4205396
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Patent number 4,205,396
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Issue date May 27, 1980
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G01 - MEASURING TESTING
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Range determining system
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Patent number 4,187,490
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Issue date Feb 5, 1980
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Sanders Associates, Inc.
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Samuel S. Ballard
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G01 - MEASURING TESTING
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3870989
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Patent number 3,870,989
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Issue date Mar 11, 1975
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G01 - MEASURING TESTING
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3789353
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Patent number 3,789,353
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Issue date Jan 29, 1974
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G01 - MEASURING TESTING
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3588796
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Patent number 3,588,796
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Issue date Jun 28, 1971
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G05 - CONTROLLING REGULATING
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3412372
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Patent number 3,412,372
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Issue date Nov 19, 1968
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G01 - MEASURING TESTING
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3116471
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Patent number 3,116,471
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Issue date Dec 31, 1963
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G01 - MEASURING TESTING
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2159481
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Patent number 2,159,481
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Issue date May 23, 1939
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G01 - MEASURING TESTING