Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1900s 1800s 1890s 1880s 1900s 1800s 1890s 1880s ANSWER DOWNLOAD EXAMIANS APP
Inventions Who was the first American female to patent her invention, a method of weaving straw with silk? Mary Kies Marjorie Joyner Amanda Jones Margaret Knight Mary Kies Marjorie Joyner Amanda Jones Margaret Knight ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented the first controllable flying AEROPLANE (AIRPLANE)? South Brothers Wright Brothers Lidenbergh Brothers West Brothers South Brothers Wright Brothers Lidenbergh Brothers West Brothers ANSWER DOWNLOAD EXAMIANS APP
Inventions What item, originally called the 'Whirlwind', was invented by Ives McGaffey in 1869? Blender Washing machine Vacuum cleaner Electric mixer Blender Washing machine Vacuum cleaner Electric mixer ANSWER DOWNLOAD EXAMIANS APP
Inventions What groovy item was invented by Englishman Edward Craven Walker in 1963? Eight-track tape deck Hot comb Leisure suit Lava lamp Eight-track tape deck Hot comb Leisure suit Lava lamp ANSWER DOWNLOAD EXAMIANS APP
Inventions FROZEN FOOD - Who discovered the first practical method of freezing food? C. Birdsey F. Rozenosh G. Findus R. Scott C. Birdsey F. Rozenosh G. Findus R. Scott ANSWER DOWNLOAD EXAMIANS APP
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