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jan 1, 1910 - AT&T buys audion patent

Description:

The audion is sold in order to pay de Forest's legal bills. AT&T's R&D department discovers that the audion was almost completely wrong, but that de Forest did get the three electrode design right (in theory). This three-electrode design leads to the creation of vacuum tube

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ByKaroline Herkamp
23 Apr 2021
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Date:

jan 1, 1910
Now
~ 116 years ago
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