inventions in the 20th century By itxasoba Oct 11, 1902 Escalators Feb 7, 1906 Corn flakes May 6, 1920 Credit cards Apr 1, 1927 Pez candy Mar 16, 1930 Scotch tape Jan 17, 1931 Lollipop Oct 1, 1933 Ice cube trays May 20, 1947 Microwave oven Jul 31, 1958 Video games Aug 13, 1958 Skateboard Oct 17, 1959 Barbie doll Feb 5, 1964 Computer mouse Jan 17, 1965 Compact disk Dec 28, 1968 Jacuzzi Apr 7, 1973 Cell phone Feb 1, 1974 Post it note Jul 26, 1980 Roller blades Nov 10, 1981 Mountain bike Mar 10, 1983 My little pony Nov 21, 1987 MP3 Sep 26, 1991 Internet Feb 9, 1994 Digital camera Apr 15, 1995 DVD
