
Cammann type binaural stethoscope
1845-1855
1845-1855
1970-1975
1920-1930
1920-1935
2005
1949
1915
1880-1900
1878-1900
1935-1945
1928
1906
1930-1960
1939-1947
1882
1889
1954
1995
1960-1963
1944
2020
1969-2000
1920-1930
1885-1900
1969
1969
1935-1945
1901-1925
1900-1930
1890-1910
22 February 1956
1995
1945-1955
circa 1928
1860-1867
1947
1946
circa 1973
1880-1910
1890-1910
1858
1930-1960
1885
1917
1867-1886
1956-1960
1964
1934