
Laennec's stethoscope
1815-1825
1815-1825
1705-1737
1990-96
1815
1815
1893-4
1863-7
1821
1814
1816
1825
2000-100 BCE
1813
1826
1815
1826
1820
circa 1821-1825
1772 (original); 1919 (model)
1826
1819
1815-1825
1826
1775-1799 (original); 1900-1907 (model)
1815
1824
1823-1825
1822
1820
1823
1815
1825
1823-1825
1820
1826
1826
4000-2001 BCE
1821
1814
1813
1824
1823
1821
1821
1821
1813-1814
1816
1936
1826
1610; 1923