trichromie

Il comprend de rares exemples de leur premier procédé de trichromie sur verre (breveté dès 1895), d’un grand format peu courant (18x13 cm), et dont la majorité relève d’une production expérimentale.
It includes rare examples of their first trichromatism process on glass (patented in 1895), an unusual large format (18x13 cm), as well as a large number of experimental works.
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