
Sub unit from LEO II computer, 1958
1958
1958
1933-1969
1933-1969
1930-1950
1961
1926
circa 1938
circa 1955
1955
1931
1930-1931
1965
1968
1963
1967-1972
1938
1935
1939
1933
1925-1935
1926-1928
1948
1938
1948
1940
1940
circa 1940
1926-1934
1969
1930
1927
1949
1801-1892 (prepared); 1946 (element replaced)
1940-1945
1966-1970
1965
1960-1961
1950-1960
1950-1960
1937
1970
1950
1949
1936
1937
1975
1935
1938
1933
1938