What furniture item was invented by California furniture designer Charles Prior Hall in 1968?
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?
When was the first lawn mower invented?
In which decade were the first successful diode and triode vacuum tubes invented?
Who is the English physicist responsible for the 'Big Bang Theory'?
What 'game' was first produced by the Southern Novelty Company in Baltimore, Maryland in 1892?
Who had an explosive idea and first patented DYNAMITE?
Who invented the Spinning Jenny?
Which insurance salesman invented the fountain pen in 1884?
When was the first elevator built?
What charge card, developed in 1950, was the first to be accepted nationally in the US?
What Enrico Fermi invented?
Which of the following was first patented by an Australian in 1889?
Who among the following invented the small pox vaccine?
What George Westinghouse invented?
Who is the only U.S. President to invent and patent something?
What invention is credited to the Russian born American inventor Vladimir Kosma Zworykin?
Benjamin Franklin was a prolific inventor. He invented the lightning rod, the Franklin stove, studied electricity, discovered the Gulf Stream, started the first library, and on and on. Among his many other inventions, what musical instrument did he invent?
What Thomas Davenport invented?
What Elisha Otis invented?
In 1853, American inventor Elisha Otis demonstrated a freight elevator equipped with a safety device to prevent falling in case a supporting cable should break. This increased public confidence in such devices. Otis established a company for manufacturing elevators and patented (1861) a steam elevator.
Many people think that he invented the elevator, but the truth is, he invented the elevator brake. He also invented the railway safety brake.
Where was the yo-yo invented?
For what does the world owe Almon Strowger a debt of gratitude?
The first hand glider was designed by...?
Who is often called the 'first African-American' inventor?
What item of apparel was invented by Ellery Chun, a Hawaiian clothing merchant, in 1931?