![](/data/hessen/images/1/7399-fdh-hs_foto-id_291/robert_von_lieben_steht_m/200w_robert-von-lieben-steht-mit-einem-hammer-auf-einer-leiter-mit-widmung-an-hofmannsthal-7399.jpg)
"Robert von Lieben (September 5, 1878 in Vienna – February 20, 1913 in Vienna) was an Austrian physicist whose work contributed to the development of valve amplifiers." - (en.wikipedia.org 14.10.2020)
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