ercas. die agentur
Technology - Siemens Healthineers MedMuseum
 
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Phonophor (1913)

Based on telephone technology, the Phonophor was the first hearing aid launched by Siemens & Halske in 1913.
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Zahnbohrer (1891)

The first electric dental drill in Germany from 1891, which was manufactured by RGS, gradually replaced the previous foot-operated models.
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Department of Ophthalmology of the University Erlangen-Nürnberg, Germany
Edited by A. Bergua MD
Technology  - Siemens MedMuseum
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