
Welsbach type C gas burner, 1893 for upright mantle.
1893
1893
1896
1897
1900
1900
1895
1896
circa 1900
1900
circa 1900
1895
1900
circa 1900
1899
1890
1891
1889
1889
2000-100 BCE
1900
1898
circa 1897
circa 1900
circa 1896
1888-1889
1892-1893
1888-1900
1890
1888
1889
1897
1894-1895
1862-1877; 1965; 1965
1897
1730; 1967
18 Janury 1948
1895
1894
1899
1896
1890-1900
1899
circa 1900s
1890-1900
1890-1900
circa 1900
1897
1897
1900
1897