Dia_259-106

Title (German) Patentschrift: Jan Szczepanik, Kopiermittel zur Herstellung von farbigen Bildern nach dem Ausbleichverfahren, 28.09.1905, Patent Nr. 35106

Patent specification: Jan Szczepanik, Copying means for the production of colored images by the bleaching process, Sept. 28, 1905, Patent No. 35106.

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