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United States Utility Patents
4,947,470 - 4,947,479

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NumberTitle
4,947,470 System for locating leaks in a geomembrane-lined impoundment or landfill filled with material
4,947,471 WITHDRAWN
4,947,472 Image forming apparatus with roll-type recording material
4,947,473 Developing device for copier
4,947,474 Mechanism of observation and recording operation on an object
4,947,475 Light emitting devices
4,947,476 Oil check light
4,947,477 Partitionable embedded program and data memory for a central processing unit
4,947,478 Switching control system for multipersonality computer system
4,947,479 Method of processing data in a banking terminal employing the total-first handling technique



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