Inventions What invention is credited to the Russian born American inventor Vladimir Kosma Zworykin? Television Telegraph Dishwasher Radio Television Telegraph Dishwasher Radio ANSWER DOWNLOAD EXAMIANS APP
Inventions What African-American inventor received 5 patents in the field of shoemaking? Jan Ernst Matzeliger Lewis Latimer Elijah McCoy Ernest Just Jan Ernst Matzeliger Lewis Latimer Elijah McCoy Ernest Just ANSWER DOWNLOAD EXAMIANS APP
Inventions This African-American woman physical therapist worked with soldiers disabled in World War II. She invented a device that helped the disabled to eat by delivering food through a tube to a mouthpiece. Beulah Henry Marjorie Joyner Bessie Blount Mae Jamison Beulah Henry Marjorie Joyner Bessie Blount Mae Jamison ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented the BALLPOINT PEN? Waterman Brothers Write Brothers Bicc Brothers Biro Brothers Waterman Brothers Write Brothers Bicc Brothers Biro Brothers ANSWER DOWNLOAD EXAMIANS APP
Inventions What treat was invented by 11-year-old Frank Epperson in 1905? Cotton candy Cracker Jacks Banana split Popsicle Cotton candy Cracker Jacks Banana split Popsicle ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1890s 1900s 1880s 1800s 1890s 1900s 1880s 1800s ANSWER DOWNLOAD EXAMIANS APP
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