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Who Invented The(खोज किसने कि) Black Box Flight Recorder

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asked May 15, 2018 in Discovery by anonymous

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answered Apr 27, 2022 by anonymous

आखिरकार साल 1954 में एरोनॉटिकल रिसर्चर डेविड वॉरेन ने इसका आविष्कार किया. तब इस बॉक्स को लाल रंग के कारण रेड एग कहा जाता था.09-Dec-2021

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