Inventions Who invented Fountain Pen? John J. Loud Lewis E. Waterman Kirkpatrick Macmillan Sir Frank Whittle John J. Loud Lewis E. Waterman Kirkpatrick Macmillan Sir Frank Whittle ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1880s 1900s 1800s 1890s 1880s 1900s 1800s 1890s ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented the phonograph? Alexander Graham Bell Thomas Edison John Kruesi Jules Levy Alexander Graham Bell Thomas Edison John Kruesi Jules Levy ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Jet Engine? Lewis E. Waterman Gottlieb Daimler Roger Bacon Sir Frank Whittle Lewis E. Waterman Gottlieb Daimler Roger Bacon Sir Frank Whittle ANSWER DOWNLOAD EXAMIANS APP
Inventions What J. B. Dunlop invented? Model airplanes Rubber boot Automobile wheel rim Pneumatic rubber tire Model airplanes Rubber boot Automobile wheel rim Pneumatic rubber tire ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade was the AEEE (now the IEEE) founded? 1950s 1850s 1930s 1880s 1950s 1850s 1930s 1880s ANSWER DOWNLOAD EXAMIANS APP
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