Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1880s 1890s 1800s 1900s 1880s 1890s 1800s 1900s ANSWER DOWNLOAD EXAMIANS APP
Inventions When was barb wire patented? 1900 1840 1874 1895 1900 1840 1874 1895 ANSWER DOWNLOAD EXAMIANS APP
Inventions What invention was first installed at a Hartford, Connecticut bank in 1889? Pay telephone Burglar alarm Automatic teller machine Time-lock safe Pay telephone Burglar alarm Automatic teller machine Time-lock safe ANSWER DOWNLOAD EXAMIANS APP
Inventions William Frederick is credited with the invention of the modern frisbee in the mid 1950's. In 1957 the Wham-O Company bought his idea and the rest is history. They named the toy after William Frisbie who was a ________? Pie maker Owner of a pizza parlor Student at Yale Ceramic plate designer Pie maker Owner of a pizza parlor Student at Yale Ceramic plate designer ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Dynamite? Alfred B. Nobel Benjamin Franklin Thomas Alva Edison Sir Alexander Graham Bell Alfred B. Nobel Benjamin Franklin Thomas Alva Edison Sir Alexander Graham Bell ANSWER DOWNLOAD EXAMIANS APP
Inventions Who synthesized the first wholly artificial gene? Hargobind Khorana J.J. Thompson Benjamin Franklin Meghnad Saha Hargobind Khorana J.J. Thompson Benjamin Franklin Meghnad Saha ANSWER DOWNLOAD EXAMIANS APP
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