In 1947, US telephone companies began using what?

More Questions:

What suspect in the standard game of Clue has the same name as a bird?

What is the only fruit to be ever banned from airplanes?

The Tour de France was first staged in which decade?

Which three states share a border with Michigan?

What was Indiana Jones’ real first name?

At what New York hotel was Sid Vicious accused of killing Nancy Spungen?

What movie soundtrack is Eric Clapton's "Tears in Heaven" from?

What was Bobby "Boris" Pickett's backing band?

Mila Kunis played what role on "That "70s Show"?

Who won a 1991 best male vocalist Grammy despite having died in 1988?

Which Indian prime minister was assassinated by two of her bodyguards?

Who was the first Chancellor of West Germany?

Which terrorist group invaded the Munich Olympic Village in 1972?

In Greek mythology, Atlas was a member of what group?

How many times does the word "jingle" appear in the first verse of "Jingle Bells"?