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This draft contains some material translated from the German entry- early biographical. The draft is expanded substantially to include details on Oberhaeuser's contributions to microscope development. The article is probably most useful as a backstory for the histories of Ernst Abbe, Carl Zeiss and E Leitz in microscope development. Edmund Hartnack probably deserves an entry for significant contributions as he continued the work of the firm. MikroSammler (talk) 20:44, 10 June 2017 (UTC)[reply]
