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- * [[:Category:CPC_C10M135/22|C10M135/22]] (No explanation available) * [[:Category:CPC_C10M135/18|C10M135/18]] (No explanation available) ...10 KB (1,196 words) - 08:31, 16 July 2024
- * [[:Category:CPC_C10M135/36|C10M135/36]] (LUBRICATING COMPOSITIONS (well drilling compositions) [[Category:CPC_C10M135/18]] ...15 KB (2,006 words) - 06:44, 19 July 2024
- IPC Code(s): B30B15/18, B30B1/32, B30B15/00 [[Category:B30B15/18]][[Category:B30B1/32]][[Category:B30B15/00]][[Category:Muraro S.r.l.]] ...299 KB (42,451 words) - 02:46, 23 May 2024