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United States Utility Patents
5,038,370 - 5,038,379

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NumberTitle
5,038,370 Directional variable small cross-sectional X-ray or gamma ray beam generating diaphragm with rotating helical slits
5,038,371 X-ray examination apparatus having three axes of rotation
5,038,372 Systems for transmitting data via telephone lines
5,038,373 Process for determining whether a subscriber is the calling or the called party
5,038,374 Data transmission and storage
5,038,375 Circuit arrangement for preventing gain from responding to frequency variation despite the presence of an isolation transformer
5,038,376 Block substitution based encryption by a modulo 2 addition method and apparatus
5,038,377 ROM circuit for reducing sound data
5,038,378 Method and apparatus for smoothing measurements and detecting boundaries of features
5,038,379 Image information searching apparatus



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