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Priority to JP16122280UpriorityCriticalpatent/JPS626524Y2/ja
Publication of JPS5783455UpublicationCriticalpatent/JPS5783455U/ja
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Publication of JPS626524Y2publicationCriticalpatent/JPS626524Y2/ja
Lubricant deterioration detection device with a plurality of light detectors, a plurality of light guide elements of different lengths and a linear light source