67501. In which decade were the first successful diode and triode vacuum tubes invented?
67502. Who is the English physicist responsible for the 'Big Bang Theory'?
67503. What 'game' was first produced by the Southern Novelty Company in Baltimore, Maryland in 1892?
67504. Who had an explosive idea and first patented DYNAMITE?
67505. Who invented the Spinning Jenny?
67506. Which insurance salesman invented the fountain pen in 1884?
67507. When was the first elevator built?
67508. What charge card, developed in 1950, was the first to be accepted nationally in the US?
67509. What Enrico Fermi invented?
67510. Which of the following was first patented by an Australian in 1889?
67511. Who among the following invented the small pox vaccine?
67512. What George Westinghouse invented?
67513. Who is the only U.S. President to invent and patent something?
67514. What invention is credited to the Russian born American inventor Vladimir Kosma Zworykin?
67515. 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?
67516. What Thomas Davenport invented?
67517. What Elisha Otis invented?
67518. Where was the yo-yo invented?
67519. For what does the world owe Almon Strowger a debt of gratitude?
67520. Who is often called the 'first African-American' inventor?
67521. The first hand glider was designed by...?
67522. In which decade was the telegraph invented?
67523. What inspired reflecting road lights to be invented?
67524. When were blue jeans invented?
67525. Who invented Electric Generator?
67526. What device for new parents did Ann Moore invent in 1969?
67527. In which decade was the transistor invented?
67528. What Igor Sikorsky invented?
67529. What Henry Bessemer invented?
67530. What invention was first installed at a Hartford, Connecticut bank in 1889?
67531. Ralph Samuelson was only 18 when he invented this sporting item in 1922. What was that?
67532. Who invented Bifocal Lens?
67533. What Karl Benz invented?
67534. When were bar code scanners invented?
67535. When was the game Frisbee invented?
67536. This English inventor is known as the 'Father of Computing.'
67537. Who invented Airship (rigid)?
67538. What piece of clothing was invented by French fashion designer Louis Reard in 1946?
67539. In which year was MIDI introduced?
67540. In which decade was the SPICE simulator introduced?
67541. Who invented the first controllable flying AEROPLANE (AIRPLANE)?
67542. What groovy item was invented by Englishman Edward Craven Walker in 1963?
67543. In which decade was the Internet first implemented?
67544. What did cardiologist Dr. Paul Zoll invent in Massachusetts in 1952?
67545. What Elmer A. Sperry invented?
67546. For over 500 years, paper was only available and sold as single sheets. In 1902, an inventive Australian used half size sheets of paper, a bit of glue and cardboard to create the what?
67547. Who developed the idea of Crop Rotation?
67548. CORN FLAKES - Who made them first?
67549. William Frederick is credited with the invention of the modern frisbee in the mid 1950's. In 1957 the Wham-O Company bought his idea and the rest is history. They named the toy after William Frisbie who was a ________?
67550. Who came up with the idea for INSTANT MASHED POTATO?