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Air passage changeover device having film screen

Valves and valve actuation – Valve – Materials
Reexamination Certificate

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Al alloy poppet valve

Valves and valve actuation – Valve – Materials
Reexamination Certificate

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Al or Al alloy poppet valve and a method of manufacturing the sa

Valves and valve actuation – Valve – Materials
Patent

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Annular sealing device having a positive stop means for use...

Valves and valve actuation – Valve – Removable seat engaging element
Reexamination Certificate

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Apparatus and method for inhibiting the leaching of lead in wate

Valves and valve actuation – Valve – Materials
Patent

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Apparatus for sealingly enclosing a check valve

Valves and valve actuation – Valve – Bodies
Patent

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Apparatus to connect a stem to a valve member

Valves and valve actuation – Valve – Removable seat engaging element
Reexamination Certificate

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Arrangement for fixing friction patches on a gate valve shutter

Valves and valve actuation – Valve
Patent

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Article having a hard lubricious coating

Valves and valve actuation – Valve – Materials
Reexamination Certificate

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Automatic swimming pool cleaners and components thereof

Valves and valve actuation – Valve – Bodies
Reexamination Certificate

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