4. Seal for a joint or juncture
  5. Seal between relatively movable parts
  6. Close proximity seal

Chang Cheng Kung

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Magnetic fluid shaft-sealing device

Seal for a joint or juncture – Seal between relatively movable parts – Close proximity seal
Reexamination Certificate

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Shaft-sealing device for pump

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Reexamination Certificate

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Profile ID: LFUS-PAI-P-3309756

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