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1 янв 1904 г. - The Vacuum Tube

Описание:

Used for high wattage amplification - TV transmitters , FM Transmitters, RADAR installations

Добавлено на ленту времени:

Programming History Timeline Assignment

13 окт 2017

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486

Дата:

1 янв 1904 г.

Сейчас

~ 121 г назад

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