4. Seal for a joint or juncture
  5. Seal between relatively movable parts
  6. Piston ring or piston ring expander or seat therefor

Hans-Albert Michel

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Cast-iron piston ring

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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Combined compression and oil scraper piston ring

Expansible chamber devices – Piston – Open-ended hollow skirt type
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Profile ID: LFUS-PAI-P-2101985

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