File:Vintage Sonotone Model 1010 Hybrid (2 Vacuum Tubes & 1 Transistor) Hearing Aid. The First Commercial Product In The World To Use Transistors, Made In USA, Introduced December 29, 1952 (26251999474).jpg

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Description The Sonotone 1010 hearing aid was the first commercial product in the world to use transistors which had been invented five years earlier in 1947.
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Source Vintage Sonotone Model 1010 Hybrid (2 Vacuum Tubes & 1 Transistor) Hearing Aid. The First Commercial Product In The World To Use Transistors, Made In USA, Introduced December 29, 1952
Author Joe Haupt from USA

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This image was originally posted to Flickr by France1978 at https://flickr.com/photos/51764518@N02/26251999474 (archive). It was reviewed on 29 May 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-sa-2.0.

29 May 2018

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6 May 2016

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current21:06, 28 May 2018Thumbnail for version as of 21:06, 28 May 20182,492 × 2,146 (2.41 MB)imagescommonswiki>Ser Amantio di NicolaoTransferred from Flickr via #flickr2commons

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