inventions in the 20th century

Escalators

Oct 11, 1902

Corn flakes

Feb 7, 1906

Credit cards

May 6, 1920

Pez candy

Apr 1, 1927

Scotch tape

Mar 16, 1930

Lollipop

Jan 17, 1931

Ice cube trays

Oct 1, 1933

Microwave oven

May 20, 1947

Video games

Jul 31, 1958

Skateboard

Aug 13, 1958

Barbie doll

Oct 17, 1959

Computer mouse

Feb 5, 1964

Compact disk

Jan 17, 1965

Jacuzzi

Dec 28, 1968

Cell phone

Apr 7, 1973

Post it note

Feb 1, 1974

Roller blades

Jul 26, 1980

Mountain bike

Nov 10, 1981

My little pony

Mar 10, 1983

MP3

Nov 21, 1987

Internet

Sep 26, 1991

Digital camera

Feb 9, 1994

DVD

Apr 15, 1995