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24 Apr 1935 Jahr - April 1935
Beschreibung:
The British Patent for "Radar System for Air Defense" is granted to Robert Watson-Watt
Zugefügt zum Band der Zeit:
The Great Depression
By
Karen
16 Jan 2018
0
0
557
Datum:
24 Apr 1935 Jahr
Jetzt
~ 89 years ago
Abbildungen:
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