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Selective asymmetric swirl intake port

Internal-combustion engines – Valve – Valve head cooperates with manifold
Patent

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Self locking valve guide

Internal-combustion engines – Valve – Valve head cooperates with manifold
Patent

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Self locking valve seat insert

Internal-combustion engines – Valve – Valve head cooperates with manifold
Patent

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Self-sealing rotary aspiration system for internal combustion en

Internal-combustion engines – Valve – Rotary
Patent

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Semi-rotating valve assembly for use with an internal...

Internal-combustion engines – Valve – Rotary
Reexamination Certificate

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Shielded valve

Internal-combustion engines – Valve – Valve head cooperates with manifold
Patent

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Shrouded valve for internal combustion engine

Internal-combustion engines – Valve – Valve head cooperates with manifold
Patent

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Shutter valve system for internal combustion engines

Internal-combustion engines – Valve
Reexamination Certificate

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Sintered alloy valve seat and method for manufacturing the same

Internal-combustion engines – Valve – Valve seat relation
Reexamination Certificate

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Sleeve-type rotary valve for an internal combustion engine

Internal-combustion engines – Valve – Rotary
Patent

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Sliding stem seal, particularly for valve stems

Internal-combustion engines – Valve – Valve head cooperates with manifold
Patent

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Slotted cylindrical tube rotary valve assembly

Internal-combustion engines – Valve – Rotary
Reexamination Certificate

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Spark ignition engine having combustion chamber provided with ve

Internal-combustion engines – Valve – Rotary
Patent

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Spark ignition engine using lean air-fuel mixture

Internal-combustion engines – Valve – Rotary
Patent

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Spark-ignition engine for lean air-fuel mixture

Internal-combustion engines – Valve – Rotary
Patent

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Spherical rotary engine valve

Internal-combustion engines – Valve – Rotary
Reexamination Certificate

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Spherical rotary engine valve assembly

Internal-combustion engines – Valve – Rotary
Reexamination Certificate

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Spherical rotary intake valve for spherical rotary valve...

Internal-combustion engines – Valve – Rotary
Reexamination Certificate

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Spherical rotary valve

Internal-combustion engines – Valve – Rotary
Patent

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Spherical rotary valve assembly for an internal combustion engin

Internal-combustion engines – Valve – Rotary
Patent

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