4. Internal-combustion engines
  5. Particular piston and enclosing cylinder construction
  6. Piston

Fanghui Shi

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Piston skirt oil retention for an internal combustion engine

Internal-combustion engines – Particular piston and enclosing cylinder construction – Piston
Reexamination Certificate

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Piston top chamfer design to reduce noise and friction

Expansible chamber devices – With lubricating means – Piston has lubricant retaining or conducting means
Reexamination Certificate

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Systems and methods for predicting engine delta friction...

Internal-combustion engines – Engine speed regulator – Idle speed control
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2344545

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