What does the registration of this trademark represent? The dawn of a new era for the Revol manufacturers, a time of growth. Thanks to the progress it has achieved in the quality of pastes and enamels since its inception, the company has earned itself a strong reputation and been able to grow. In 1888, the manufacturers created a soft-paste porcelain, otherwise known as culinary porcelain. This innovation marked a turning-point in the company’s history. Registering it under the trademark « Terre d’acier » (Steel earth), Hector Revol reserved the company’s right to exploit this new product. The archive shown here from 1901 renews the exclusivity of this right.