
Brennan's Gyroscopic Mono-rail Car
1907
1907
1903
circa 1897
1895-1904
1890-1910
1898
1903
1775-1799 (original); 1900-1907 (model)
1905
1830 (original); 1967 (model)
1901
1910
1910
1896
after 1903
1909
circa 1905
1913
1898-1908
2000-100 BCE
1914
1934
1900
1890-1910
1900-1909
1900-1910
1895-1899
1900
1898-1900
circa 1900
circa 1910
1914
circa 1900
1914
1904
1901
1910
1900
1955; 1830
1890 - 1900
1890
1895-1910
1893-4
1899-1901
1897
1907
1901-1913
1891-1900
1902
1872 (original); 1909 (model)