Addac adding machine
1926
1926
1926
1924
1925
1922
1923
1924
1925
1922-1923
1922-1923
1922-1923
1922-1923
1923
1934
1926
2000-100 BCE
1924
1955; 1830
1923
1925
1925
1990-96
1922-1925
1924
1922-1924
1923
1922-1923
1922-1923
1922-1923
1922-1923
1922-1923
1925-1926
1925
1934
1922-1923
1922-1923
1923
1926
1922-1925
1922-1924
1926
1922
1903 (original); 1982 (model)
4000-2001 BCE
1922
1925
1925
1930 (replica); 1834 (original)
1926
1924