
Laennec's stethoscope
1815-1825
1815-1825
1775-1799 (original); 1900-1907 (model)
1820
1821
1812
1825
1815
1815
1893-4
1863-7
1821
1812
1816
2000-100 BCE
1813
1820
1815
circa 1810
1810-1817
1814
1812
1990-96
circa 1821-1825
1824
1815-1825
1824
1705-1737
1820
1823
1815
1812
1825
1823-1825
4000-2001 BCE
1815
1813
1821
1813-1814
1821
1811-1812
1772 (original); 1919 (model)
1819
circa 1810
1814
1823
1823-1825
1822
1821
1668; 1924
1822