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United States Utility Patents
5,987,970 - 5,987,979

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NumberTitle
5,987,970 Rotational viscosity measurement apparatus
5,987,971 Interlock for a storage tank used in containing a respirable liquid cryogen
5,987,972 Method for detection of solid particles in fluid and particle sensor used in said method
5,987,973 Rotation detecting device of an engine
5,987,974 Portable cylinder contribution tester for a vehicle which includes a diesel engine which is controlled by an electronic circuit
5,987,975 Machine lubrication system monitor
5,987,976 Method for determining the condition of engine oil based on TBN modeling
5,987,977 Device for determining an abnormal degree of deterioration of a catalyst
5,987,978 Apparatus for testing tire tread depth
5,987,979 Method and apparatus for detecting railtrack failures by comparing data from a plurality of railcars



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