SCIENCES & BREVETS
Asphalt emulsion and manufacture thereof
| N° brevet | US 1882834 | ||
| Date publication | 18-10-1932 | ||
| Date dépôt | 15-08-1929 | ||
| Inventeur(s) | Lloyd Augustus Hall, Mortell Edwin E |
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| Bureau du brevet | United States Patent and Trademark Office | ||
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VISIONNER LE BREVET |
| ⚠ Conditions d'utilisation : Google patents | EPO | USPTO | OPIC |