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United States Utility Patents
5,239,180 - 5,239,189

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NumberTitle
5,239,180 Laser systems for food analysis based on reflectance ratio detection
5,239,181 Bridge type optoelectronic sample and hold circuit
5,239,182 Wafer conveyor apparatus and method for detecting inclination of wafer inside cassette
5,239,183 Optical gap measuring device using frustrated internal reflection
5,239,184 Process and machine for spotting superficial defects on layers and/or sleeves of elastomeric material
5,239,185 Method and equipment for measuring absorptance of light scattering materials using plural wavelengths of light
5,239,186 Composite quantum well infrared detector
5,239,187 Josephson effect semiconductor device with channel layers of semiconductor and superconductor materials
5,239,188 Gallium nitride base semiconductor device
5,239,189 Integrated light emitting and light detecting device



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