General Knowledge · Inventions and Discoveries
निम्नलिखित में से किसने जेरॉक्स मशीन (Xerox Machine) का आविष्कार किया था?
- 1चेस्टर कार्लसन✓
- 2रुडोल्फ डीजल
- 3मार्था फ्लेश
- 4गोटलिब डेमलर
सही उत्तर देखें
चेस्टर कार्लसन
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