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

Thomas Letsch

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Blade ring for air-swept roller mills

Solid material comminution or disintegration – Apparatus – Including means applying fluid to material
Patent

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Blade ring for air-swept roller mills

Solid material comminution or disintegration – Apparatus – Including means applying fluid to material
Patent

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Coolable plunger piston for internal combustion engines

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

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Piston with oval shaped lands

Expansible chamber devices – Piston – Non-circular
Patent

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Roller mill having a modular construction

Solid material comminution or disintegration – Apparatus – Plural rotary or oscillatory surfaces cooperate with common...
Reexamination Certificate

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Profile ID: LFUS-PAI-P-682019

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