
Oxygen cylinder used by climbers on 1953 Mount Everest expedition
1952-3
1952-3
1830 (original); 1967 (model)
1911
1914-1916
1909-1910
1913
circa 1915
1668; 1924
1610; 1923
1907
1910
1915
1915
1910
1908
circa 1910
1909
1910
1916
1914
1906
1915
1906
1912
1915
1910
1910
1912
1915
1906
1915
1955; 1830
1914
c.1912
1906-1915
1914
1906-1916
1907
2000-100 BCE
1914
1872 (original); 1909 (model)
1914
1913
1914
1934
1907
1915-1916
1903 (original); 1982 (model)
1772 (original); 1919 (model)
1909