4. Synthetic resins or natural rubbers -- part of the class 520 ser
  5. Synthetic resins
  6. From carboxylic acid or derivative thereof

Shougang He

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Functional polyester polymer and production process thereof

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Reexamination Certificate

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Polyesters and production process thereof

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2488443

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