Inventions When was the toothbrush invented? 1770 1765 1742 1790 1770 1765 1742 1790 ANSWER DOWNLOAD EXAMIANS APP
Inventions Ralph Samuelson was only 18 when he invented this sporting item in 1922. What was that? Motorboat Golf tee Hang glider Water skis Motorboat Golf tee Hang glider Water skis ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1890s 1880s 1800s 1900s 1890s 1880s 1800s 1900s ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented the BALLPOINT PEN? Write Brothers Biro Brothers Bicc Brothers Waterman Brothers Write Brothers Biro Brothers Bicc Brothers Waterman Brothers ANSWER DOWNLOAD EXAMIANS APP
Inventions For what does the world owe Almon Strowger a debt of gratitude? Parking Meters Automatic Telephone Exchanges Vending Machines Traffic Lights Parking Meters Automatic Telephone Exchanges Vending Machines Traffic Lights ANSWER DOWNLOAD EXAMIANS APP
Inventions Which insurance salesman invented the fountain pen in 1884? Sir William Grove Charles Kettering George Fountain Lewis Edson Waterman Sir William Grove Charles Kettering George Fountain Lewis Edson Waterman ANSWER DOWNLOAD EXAMIANS APP
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