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Class Information
Number: 29/DIG.74
Name: Metal working > Partial immersion of cutter

Patents under this class:

Patent Number Title Of Patent Date Issued
4822507 Lubricating oil composition serving as sliding surface oil and metal working oil, and method of lubricating working machinery using said oil composition Apr. 18, 1989
4740323 Method of lubricating working machinery Apr. 26, 1988

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