Inventions When were bar code scanners invented? 1960s 1970s 1950s 1940s 1960s 1970s 1950s 1940s ANSWER DOWNLOAD EXAMIANS APP
Inventions When was the Raggedy Ann doll patented? 1911 1920 1919 1915 1911 1920 1919 1915 ANSWER DOWNLOAD EXAMIANS APP
Inventions What James Watt invented? Rotary steam engine Hot air balloon Steam boat Diving bell Rotary steam engine Hot air balloon Steam boat Diving bell ANSWER DOWNLOAD EXAMIANS APP
Inventions What African-American inventor received 5 patents in the field of shoemaking? Lewis Latimer Elijah McCoy Ernest Just Jan Ernst Matzeliger Lewis Latimer Elijah McCoy Ernest Just Jan Ernst Matzeliger ANSWER DOWNLOAD EXAMIANS APP
Inventions The Manhattan Project was started by President Roosevelt in 1942 to ensure that the U.S. beat the Germans in developing a nuclear bomb. Whom did Roosevelt appoint as scientific head the Manhattan Project? James B. Conant Vannevar Bush Leslie R. Groves Robert Oppenheimer James B. Conant Vannevar Bush Leslie R. Groves Robert Oppenheimer ANSWER DOWNLOAD EXAMIANS APP
Inventions Who among the following invented the small pox vaccine? Edward Jenner Robert Hooke Robert Koch Louis Pasteur Edward Jenner Robert Hooke Robert Koch Louis Pasteur ANSWER DOWNLOAD EXAMIANS APP
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