4. Valves and valve actuation
  5. Valve head movably connected for accommodation to seat
  6. Rotatable only

Osamu Nakai

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Bolt press fit apparatus

Metal working – Means to assemble or disassemble – With control means energized in response to activator...
Reexamination Certificate

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Butterfly valve

Valves and valve actuation – Mechanical movement actuator – Particularly packed or sealed
Patent

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Method of mounting valve seats in a butterfly valve

Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent

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Rotary valve

Valves and valve actuation – Valve head movably connected for accommodation to seat – Rotatable only
Patent

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Separation method for zinc sulfide

Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group iib metal
Reexamination Certificate

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Profile ID: LFUS-PAI-P-294711

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