4. Stock material or miscellaneous articles
  5. Composite
  6. Of natural gum, rosin, natural oil or lac

Helmut Ronge

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Modified colophony resins, a process for their preparation, thei

Chemistry: natural resins or derivatives; peptides or proteins; – Natural resins or derivatives – Rosin or derivative used as starting material in process – or...
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Modified colophony rosins, a process for their preparation, thei

Stock material or miscellaneous articles – Composite – Of natural gum – rosin – natural oil or lac
Patent

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Profile ID: LFUS-PAI-P-1458699

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