
Laennec's stethoscope
1815-1825
1815-1825
1820
1821
1819
1830 (original); 1967 (model)
1775-1799 (original); 1900-1907 (model)
1829
1813-1814
1820
1955; 1830
1826
1863-7
1829
1815
1829
1815
1815
1893-4
1821
1830
1814
1816
1825
2000-100 BCE
1813
1820-1830
1826
circa 1821-1825
1826
1814
1990-96
1823
1824
1815-1825
1830
1830
1826
1824
1823-1825
1822
1829
1705-1737
1828
1870-1877
1820
1823
1815
1825
1830
1821