Inventions For what does the world owe Almon Strowger a debt of gratitude? Automatic Telephone Exchanges Parking Meters Vending Machines Traffic Lights Automatic Telephone Exchanges Parking Meters Vending Machines Traffic Lights ANSWER DOWNLOAD EXAMIANS APP
Inventions What type of system did Paul Nipkow, John Baird, and Charles Jenkins all invent? Telephone Electricity Television Early Warning Telephone Electricity Television Early Warning ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1900s 1800s 1890s 1880s 1900s 1800s 1890s 1880s 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? Jan Ernst Matzeliger Ernest Just Lewis Latimer Elijah McCoy Jan Ernst Matzeliger Ernest Just Lewis Latimer Elijah McCoy ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Fountain Pen? John J. Loud Lewis E. Waterman Sir Frank Whittle Kirkpatrick Macmillan John J. Loud Lewis E. Waterman Sir Frank Whittle Kirkpatrick Macmillan ANSWER DOWNLOAD EXAMIANS APP
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