DIFF Subgroup
F01L 5/045 Full Title
Slide valve-gear or valve-arrangements (with pure rotary or oscillatory movement F01L7/00) > with cylindrical, sleeve, or part-annularly shaped valves
F01L 5/045 Slide valve-gear or valve-arrangements (with pure rotary or oscillatory movement F01L7/00) > with cylindrical, sleeve, or part-annularly shaped valves