| http://www.w3.org/ns/prov#value | - A cast cylinder head for an internal combustion engine, said head including a flat mounting surface and having for each ofseveral in-line circular piston areas:a) a wedge shaped combustion chamber extending from said mounting surface and defined byi) an especially configured, closed peripheral edge surface co-planar with said mounting surface and forming the opening of said combustion chamber;ii)
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