
Laennec's stethoscope
1815-1825
1815-1825
1775-1799 (original); 1900-1907 (model)
1830
1820
1821
1829
1820
1955; 1830
1829
1826
1815
1815
1810-1817
1893-4
1863-7
1821
1812
1830
1812
1829
1814
1816
1825
2000-100 BCE
1813
1820-1830
1810-1830
1826
1812
circa 1810
1815
1830
1826
1815
1824
1811-1812
circa 1821-1825
1772 (original); 1919 (model)
1826
1819
circa 1810
1814
1990-96
1815-1825
1830
1823-1825
1829
1822
1829
1829