DIFF Subgroup Additional Only
F02B 2023/085 Full Title
Other engines characterised by special shape or construction of combustion chambers to improve operation (engines with incandescent chambers F02B9/08) > with positive ignition
F02B 2023/085 Other engines characterised by special shape or construction of combustion chambers to improve operation (engines with incandescent chambers F02B9/08) > with positive ignition