DIFF Subgroup
F01M 9/108 Full Title
Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00 > Lubrication of valve gear or auxiliaries
F01M 9/108 Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00 > Lubrication of valve gear or auxiliaries