SCIENCES & BREVETS
Homogeneous alkaline detergents and method of producing same
| N° brevet | US 2142871 | ||
| Date publication | 03-01-1939 | ||
| Date dépôt | 14-06-1937 | ||
| Inventeur(s) | |||
| Bureau du brevet | United States Patent and Trademark Office | ||
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VISIONNER LE BREVET |
| ⚠ Conditions d'utilisation : Google patents | EPO | USPTO | OPIC |