Timeline of 1900's By Manel Garcia Cama Feb 4, 1901 vacuum cleaner Feb 4, 1902 air conditioning Feb 4, 1902 automated tea maker Feb 4, 1903 electrocardiogram Feb 4, 1903 first powered flight Feb 4, 1904 radar Feb 4, 1904 tea bags Feb 4, 1905 plastic Feb 4, 1906 radio broadcasting Feb 4, 1907 electric washing machine Feb 4, 1908 coffee filter Feb 4, 1908 water coolers Feb 4, 1908 paper cups Feb 4, 1913 crossword puzzles Feb 4, 1913 bras Feb 4, 1913 zips Feb 11, 1916 sonar Feb 11, 1920 hair dryers; kiss-proof lipstick Feb 11, 1921 robots; insulin Feb 11, 1924 frozen food Feb 11, 1925 television Feb 11, 1926 aerosol sprays Feb 11, 1927 Talkies’ at the movies Feb 11, 1928 penicillin Feb 11, 1930 jet engine; mechanical toothbrushes; Scotch tape Feb 11, 1932 parking meter Feb 11, 1935 electric guitar Feb 11, 1936 sun tan lotion; electric blanket Feb 11, 1938 ballpoint pen; photocopying Feb 11, 1939 helicopters Feb 11, 1942 first nuclear reactor built; Feb 11, 1946 microwave ovens; automation; Bikini; Tupperware; Tupperware Parties Feb 11, 1947 transistors; holograms; mobile phones Feb 11, 1948 frisbees; velcro; general purpose computers; contact lenses Feb 11, 1950 credit cards Feb 11, 1951 Tetrapak cartons of milk Feb 11, 1952 wide-screen cinema Feb 11, 1953 transistor radio Feb 11, 1954 solar cell Feb 11, 1955 atomic clock Feb 11, 1956 video tape recorder Feb 11, 1957 satellite Feb 11, 1958 video games; modems Feb 11, 1959 car seat belts Feb 11, 1960 cardiac pacemaker; laser Feb 11, 1961 Man in Space Feb 11, 1964 computer mouse; miniskirt Feb 11, 1966 pocket television Feb 11, 1967 portable calculator Feb 11, 1968 biometrics; Workmate; artificial heart Feb 11, 1969 the Internet; cash dispenser Feb 11, 1970 LED and LCD’s Feb 11, 1971 floppy disc Feb 11, 1973 barcodes; post-it-note; car airbags Feb 11, 1975 personal computer; laser printer Feb 11, 1977 MRI scanner; inkjet printer Feb 11, 1979 first personal stereo Feb 11, 1980 Hepatitis B vaccine Feb 11, 1987 disposable contact lenses Feb 11, 1989 World Wide Web