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United States Utility Patents
4,972,190 - 4,972,199

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NumberTitle
4,972,190 Analog signal digitizer for recording on a video
4,972,191 Wave absorber, and an anechoic chamber using the same
4,972,192 Constant amplitude doppler producing radar reflector
4,972,193 Target recognition
4,972,194 Method and device for compensating for the speed of clutter in a coherent doppler radar with variable blind speed
4,972,195 Interferometric lightning ranging system
4,972,196 Broadband, unidirectional patch antenna
4,972,197 Integral heater for composite structure
4,972,198 Multiple loop antenna
4,972,199 Low cross-polarization radiator of circularly polarized radiation



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