Rotative Compound Beam Engine, 1881
1968-1971
1968-1971
(1962); 1982
1968
1970
1967-1971
1970
1971
1970
1972
1971
1969
1968
circa 1969
1969
1973
2000-100 BCE
1967
1967-1972
1968
1967
1969
circa 1972
1968
1969
1969
1968
1971
1970-1972
1990-96
circa 1968
1969-1970
1969
About 1970
1968
1973
1967
1968-1972
1971
1967
1903 (original); 1982 (model)
1830 (original); 1967 (model)
1972
1970-1971
4000-2001 BCE
1967
1970
1969
1970
1970
1971-1900