Inventions When was barb wire patented? 1874 1895 1840 1900 1874 1895 1840 1900 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 What invention was first installed at a Hartford, Connecticut bank in 1889? Pay telephone Time-lock safe Burglar alarm Automatic teller machine Pay telephone Time-lock safe Burglar alarm Automatic teller machine ANSWER DOWNLOAD EXAMIANS APP
Inventions What item, originally called the 'Whirlwind', was invented by Ives McGaffey in 1869? Vacuum cleaner Washing machine Blender Electric mixer Vacuum cleaner Washing machine Blender Electric mixer ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade was the Internet first implemented? 1960s 1940s 1950s 1980s 1960s 1940s 1950s 1980s ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Bifocal Lens? Rudolf Diesel Benjamin Franklin Thomas Alva Edison Alfred B. Nobel Rudolf Diesel Benjamin Franklin Thomas Alva Edison Alfred B. Nobel ANSWER DOWNLOAD EXAMIANS APP
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