Juan J. P. Herrerq

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Barcelona, ES

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Patents Grantslast 30 patents

Information Patent Grant
Chromium free process for the tanning of hides
- Patent number 4,960,429
- Issue date Oct 2, 1990
- Hispano Quimica, S.A.
- Roberto C. Colom
- C14 - SKINS HIDES PELTS LEATHER