
Cammann type binaural stethoscope
1845-1855
1845-1855
1920-1935
1915
1970-1975
1878-1900
1880-1900
1949
2005
1900-1930
1944
1946
1946
circa 1973
circa 1973
circa 1910
1969
1969
13 May 1961
1882
1880-1910
1891-1910
1880-1893
2020
1920-1930
1885
1897-1899
1905
circa 1905
1925
1934
1956-1960
1939
1917
1860-1890
1910-1930
1900-1930
1999
1964
1995
c. 2020