Inventions When was the toothbrush invented? 1790 1765 1742 1770 1790 1765 1742 1770 ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented the BALLPOINT PEN? Bicc Brothers Waterman Brothers Write Brothers Biro Brothers Bicc Brothers Waterman Brothers Write Brothers Biro Brothers ANSWER DOWNLOAD EXAMIANS APP
Inventions Who synthesized the first wholly artificial gene? Meghnad Saha Hargobind Khorana Benjamin Franklin J.J. Thompson Meghnad Saha Hargobind Khorana Benjamin Franklin J.J. Thompson ANSWER DOWNLOAD EXAMIANS APP
Inventions When were bar code scanners invented? 1970s 1960s 1950s 1940s 1970s 1960s 1950s 1940s ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade was the AEEE (now the IEEE) founded? 1880s 1850s 1930s 1950s 1880s 1850s 1930s 1950s ANSWER DOWNLOAD EXAMIANS APP
Inventions What African-American inventor received 5 patents in the field of shoemaking? Lewis Latimer Elijah McCoy Jan Ernst Matzeliger Ernest Just Lewis Latimer Elijah McCoy Jan Ernst Matzeliger Ernest Just ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS