Siemensᅠ developedᅠ theᅠ Phonophor, the firstᅠtechnicalᅠ solutionᅠ forᅠ hearing ᅠloss
In 1878, Siemens, now Sivantos,ᅠdevelopedᅠ the ᅠPhonophor, the first ᅠtechnicalᅠ solutionᅠ for ᅠhearing ᅠloss. The history of electrical hearing assistance instruments originated with technological advances in telephones at the end of the 19th century when Werner von Siemens integrated a horseshoe magnet in the receiver of a telephone, and succeeded in substantially improving transmission quality in the telephone.
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Source: Siemens
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