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jan 1, 1949 - Zirkuitu txertatuak patentatu.

Description:

Urte honetan, zirkuitu txertatuak Werner Jacobic ingienari alemaniarrak patentatu zuen, baino ez ziren oraindik erabiltzen.

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BySERGIO ROMAN DOMINGUEZ

4 Oct 2018

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Date:

jan 1, 1949

Now

~ 76 years ago

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