Top ten inventions of the last 100 years By lucuyg8 Jan 1, 1902 Air Conditioning Jan 1, 1908 Washing Machine Jan 1, 1912 Traffic Light (Electric) Jan 1, 1923 Instant Camera Jan 1, 1926 Heart Pacemaker Jan 1, 1941 Penicillin production starts Jan 1, 1955 Microwave Oven Jan 1, 1958 Jet Airliner Jan 1, 1969 Smoke Detector Jan 1, 1973 Cell Phone
