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

Christian Herbst-Dederichs

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Piston ring and method for the production thereof

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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Thermally applied coating of mechanically alloyed powders...

Stock material or miscellaneous articles – All metal or with adjacent metals – Having metal particles
Reexamination Certificate

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Wear protection layer for piston rings, containing wolfram...

Stock material or miscellaneous articles – All metal or with adjacent metals – Laterally noncoextensive components
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2314532

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