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Multifrequency antenna array
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Patent number 5,333,001
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Issue date Jul 26, 1994
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Martin Marietta Corporation
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Charles E. Profera
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H01 - BASIC ELECTRIC ELEMENTS
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Antenna feed system
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Patent number 4,163,974
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Issue date Aug 7, 1979
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RCA Corporation
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Charles E. Profera
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G01 - MEASURING TESTING
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Antenna feed network
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Patent number 4,122,453
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Issue date Oct 24, 1978
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RCA Corporation
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Charles Edward Profera
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H01 - BASIC ELECTRIC ELEMENTS
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Beam forming network
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Patent number 4,091,387
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Issue date May 23, 1978
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RCA Corporation
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Charles Edward Profera
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H01 - BASIC ELECTRIC ELEMENTS