Lampes docimastiques, inventées par T.P. Bertin ... .
Lampes docimastiques, inventées par T.P. Bertin ... .
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About This Book
A publicity sheet issued most probably by the inventor Bertin for his lamp used for soldering and metallurgical analysis. A similar sheet entitled "Lampes docimastiques, ou fontaines a feu, inventées par Théodore-Pierre Bertin" has "chez citoyen Bertin" and "chez citoyen Berthé" and therefore most probably predates this one.
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