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13 июн 1947 г. - Trackball patent

Описание:

The trackball patent was accepted, however it was kept as a miliry secret

Добавлено на ленту времени:

Computer mice

29 сен 2017

0

0

636

Дата:

13 июн 1947 г.

Сейчас

~ 78 г назад

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