bn:03119929n
Noun Named Entity
Categories: German scientific instrument makers, Lens designers, Businesspeople from Hesse, German businesspeople in the healthcare industry, People from Wetzlar
EN
Carl Kellner  Dr. Carl Kellner
EN
Carl Kellner was a German mechanic and self-educated mathematician who founded in 1849 an "Optical Institute" that later became the Leitz company, makers of the Leica cameras. Wikipedia
English:
optician
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EN
Carl Kellner was a German mechanic and self-educated mathematician who founded in 1849 an "Optical Institute" that later became the Leitz company, makers of the Leica cameras. Wikipedia
German inventor of the "Kellner eyepiece" Wikipedia Disambiguation
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