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

Eckhard Seidel

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Method for the manufacture of polyesters

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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Method for the production of polybutylene terephthalate

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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Mixture, polyester composition, film and procedures for...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate

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Optimum dipropylene glycol content polytrimethylene...

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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Polytrimethylene terephthalate resins with improved properties

Stock material or miscellaneous articles – Web or sheet containing structurally defined element or...
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2054558

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