टाइपराइटर के आविष्कारक है — Typewriter Ke Avishkarak Hai
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टाइपराइटर के आविष्कारक है — Typewriter Ke Avishkarak Hai

(a) डेवी

(b) शोल्स

(c) रोएंटजेन

(d) मार्कोनी

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