Rotative Compound Beam Engine, 1881
1968-1971
1968-1971
(1962); 1982
1968
1976
1972-1977
1974-1977
1977
1970
1976
1967-1971
1977
1970
1977
1971
1970
1972
1971
1975
1969
1968
circa 1969
1975
1977
1969
1973
2000-100 BCE
1974-1976
1967
1967-1972
1968
1976
1967
1969
circa 1975
circa 1972
1975
1978
1968
1969
1969
1968
1971
1978
1970-1972
1990-96
circa 1968
1978
1969-1970
1976
1973-1974