Inventions 1900 to 1990 By laura.perez.yanez Jan 1, 1901 Vacuum cleaner Feb 2, 1902 Air conditioning May 5, 1902 Automated tea maker Mar 4, 1903 Electrocardiogram Sep 10, 1903 First powered flight May 18, 1904 Tea bags Dec 13, 1904 Radar Jan 17, 1905 Plastic Mar 12, 1906 Radio broadcasting Apr 30, 1907 Electric washing machine Jul 28, 1908 Coffee filter Oct 21, 1908 water coolers Nov 4, 1908 Paper cups Apr 11, 1913 Zips Jun 10, 1913 Bras Sep 17, 1913 Crossword puzzles Nov 9, 1916 Sonar Feb 10, 1920 kiss-proof lipstick Feb 10, 1920 hair dryers Feb 10, 1921 insulin Feb 10, 1921 robots Feb 10, 1924 frozen food Feb 10, 1925 television Feb 10, 1926 aerosol sprays Feb 10, 1927 ‘Talkies’ at the movies Feb 10, 1928 penicillin Feb 10, 1930 jet engine Feb 10, 1930 mechanical toothbrushes Feb 10, 1930 Scotch tape Feb 10, 1932 parking meter Feb 10, 1935 electric guitar Feb 10, 1936 electric blanket Feb 10, 1936 sun tan lotion Feb 10, 1938 photocopying Feb 10, 1938 ballpoint pen Feb 10, 1939 helicopters Feb 10, 1942 first nuclear reactor built Feb 10, 1946 microwave ovens Feb 10, 1946 automation Feb 10, 1946 Bikini Feb 10, 1946 Tupperware Feb 10, 1946 Tupperware Parties Feb 10, 1947 mobile phones Feb 10, 1947 holograms Feb 10, 1947 transistors Feb 10, 1948 contact lenses Feb 10, 1948 general purpose computers Feb 10, 1948 velcro Feb 10, 1948 frisbees Feb 10, 1950 credit cards Feb 10, 1951 Tetrapak cartons of milk Feb 10, 1952 wide-screen cinema Feb 10, 1953 transistor radio Feb 10, 1954 solar cell Feb 10, 1955 atomic clock Feb 10, 1956 video tape recorder Feb 10, 1957 satellite Feb 10, 1958 modems Feb 10, 1958 video games Feb 10, 1959 car seat belts Feb 10, 1960 laser Feb 10, 1960 cardiac pacemaker Feb 10, 1961 Man in Space Feb 10, 1964 miniskirt Feb 10, 1964 computer mouse Feb 10, 1965 HTML Feb 10, 1965 bay buggy Feb 10, 1965 optical disc Feb 10, 1966 pocket television Feb 10, 1967 portable calculator Feb 10, 1968 artificial heart Feb 10, 1968 Workmate Feb 10, 1968 biometrics Feb 10, 1969 cash dispenser Feb 10, 1969 the Internet Feb 10, 1970 LED and LCD’s Feb 10, 1971 floppy disc Feb 10, 1973 car airbags Feb 10, 1973 barcodes Feb 10, 1973 post-it-note Feb 10, 1975 personal computer Feb 10, 1975 laser printer Feb 10, 1977 inkjet printer Feb 10, 1977 MRI scanner Feb 10, 1979 first personal stereo Feb 10, 1980 Hepatitis B vaccine May 10, 1987 disposable contact lenses Feb 10, 1989 World Wide Web