
Phillip's Economic Computer
1949
1949
1942
1946-1950
1940
1936
1940
1950
1945
1936
1938
1943
1830 (original); 1967 (model)
1949
1839 (original); circa 1988 (replica)
1952-3
1948-1950
1945
1948
1946
1943
1948
1945
1947
1940
1938
1946
1940
1936
1950
1938
1938
1950
1955; 1830
circa 1950
1950
1949
1940-1945
1940
1937-1937
1948
1937-1938
1940-1949
1937
1949
1937
1946
circa 1942
1939
1936
1946-1948