4. Internal-combustion engines
  5. Cooling
  6. Internal cooling of moving parts; e.g., hollow valves,...

John D. Douro

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Cylinder block casting bulkhead window formation

Metal founding – Process – Shaping liquid metal against a forming surface
Reexamination Certificate

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Piston and cylinder oil squirter rail and system

Internal-combustion engines – Cooling – Internal cooling of moving parts; e.g. – hollow valves,...
Reexamination Certificate

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