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The first hearing aid was created in the 17th century. The movement toward modern hearing aids began with the creation of the telephone, and the first electric hearing aid was created in 1898. By the late 20th century, the digital hearing aid was distributed to the public commercially. Some of the first hearing aids were external hearing aids.
Pages in category "Companies formerly listed on the Frankfurt Stock Exchange" The following 25 pages are in this category, out of 25 total. This list may not reflect recent changes .
During the 1990s, the company expanded further, buying the Swiss hearing aid manufacturer Bernafon, Phonic Ear, the headset manufacturer DanaCom and Interacoustics. In 1995, the company was listed on the Copenhagen Stock Exchange. In 1997, it was decided to change the name of the company from Oticon Holding A/S to William Demant Holding A/S ...
The Frankfurt Stock Exchange is the largest stock exchange in Germany and most major German public companies are listed on it. It is owned by Deutsche Börse which also operates Xetra . There are also many non-German companies listed on the Frankfurt Stock Exchange.
This page lists company lists ordered by the stock exchange the companies are listed on. This list is incomplete ; you can help by adding missing items . ( August 2012 )
Hearing aids are used for a variety of pathologies including sensorineural hearing loss, conductive hearing loss, and single-sided deafness. Hearing aid candidacy was traditionally determined by a Doctor of Audiology, or a certified hearing specialist, who will also fit the device based on the nature and degree of the hearing loss being treated.
In the European region, there are multiple stock exchanges among which five are considered major (as having a market cap of over US$1 trillion): . Euronext, which is a pan-European, Dutch-domiciled and France-headquartered stock exchange composed of seven market places in Belgium, France, Ireland, the Netherlands, Italy, Norway, and Portugal.
Location of Germany. Germany is a federal parliamentary republic in central-western Europe. Germany has the world's 3rd largest economy by nominal GDP, and the 5th largest by PPP. As a global leader in several industrial and technological sectors, it is both the world's third-largest exporter and importer of goods.