4. Internal-combustion engines
  5. Valve
  6. Reciprocating valve

Frederick G. Wietig

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Engine valve

Internal-combustion engines – Valve – Reciprocating valve
Patent

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Engine valve

Internal-combustion engines – Valve – Reciprocating valve
Patent

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Piston ring having hard multi-layer coating

Seal for a joint or juncture – Seal between relatively movable parts – Piston ring or piston ring expander or seat therefor
Reexamination Certificate

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Profile ID: LFUS-PAI-P-247491

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