
Laennec's stethoscope
1815-1825
1815-1825
1820
1823
1821
1829
2000-100 BCE
1829
1826
1826
1820
1955; 1830
1825
1825
1815
1815
1815
1820-1830
1893-4
1863-7
1821
1830
1829
1814
1816
1829
1821
1826
1830
1815
1824
1826
1775-1799 (original); 1900-1907 (model)
circa 1821-1825
1772 (original); 1919 (model)
1819
1814
1823-1825
4000-2001 BCE
1826
1826
1821
1990-96
1824
1815-1825
1830
1830 (original); 1967 (model)
1823-1825
1829
1822
1829