Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1800s 1880s 1900s 1890s 1800s 1880s 1900s 1890s ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Dynamite? Thomas Alva Edison Alfred B. Nobel Benjamin Franklin Sir Alexander Graham Bell Thomas Alva Edison Alfred B. Nobel Benjamin Franklin Sir Alexander Graham Bell ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Fountain Pen? Lewis E. Waterman Kirkpatrick Macmillan Sir Frank Whittle John J. Loud Lewis E. Waterman Kirkpatrick Macmillan Sir Frank Whittle John J. Loud ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Jet Engine? Gottlieb Daimler Lewis E. Waterman Roger Bacon Sir Frank Whittle Gottlieb Daimler Lewis E. Waterman Roger Bacon Sir Frank Whittle ANSWER DOWNLOAD EXAMIANS APP
Inventions When was the toothbrush invented? 1742 1790 1765 1770 1742 1790 1765 1770 ANSWER DOWNLOAD EXAMIANS APP
Inventions This part-time race car driver invented the bucket seat in 1969. Who was he?? Steve McQueen Harrison Frazier John Wayne Paul Newman Steve McQueen Harrison Frazier John Wayne Paul Newman ANSWER DOWNLOAD EXAMIANS APP
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