Apollo fuel cell power plant
1972
1972
1968-1971
1966-1970
1967
1971
(1962); 1982
1965-1968
1970
1965-1971
1970
1973
1968
circa 1972
1969
1967-1972
1968
1968
1965
1965
1967
1965
1965
1970
1971
1967-1971
2000-100 BCE
1969
1965
1969
1968
1969
circa 1965
1969
1965
1968
1971
1966-1970
1986 (replica); 1501-1600 (original)
1965
1970
1966
1903 (original); 1982 (model)
1969
1970
1965
1970-1972
1990-96
1968
1969-1970
1973