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

Marc Bruce Goldfinger

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Manufacture of polyketones

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From ketone or ketene reactant
Reexamination Certificate

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Manufacture of polysulfones

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Reexamination Certificate

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Thermoplastic elastomers

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-2148649

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