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United States Utility Patents
4,956,680 - 4,956,689

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NumberTitle
4,956,680 Thin film transistor
4,956,681 Ternary logic circuit using resonant-tunneling transistors
4,956,682 Optoelectronic integrated circuit
4,956,683 Isolation of p-n junctions
4,956,684 Printer head with light emitting element array
4,956,685 Thin film solar cell having a concave n-i-p structure
4,956,686 Two color infrared focal plane array
4,956,687 Backside contact blocked impurity band detector
4,956,688 Radiation resistant bipolar memory
4,956,689 High speed gallium arsenide transistor and method



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