
Brennan's Gyroscopic Mono-rail Car
1907
1907
1903
1903
1905
1830 (original); 1967 (model)
1901
1910
1910
after 1903
1909
circa 1905
2000-100 BCE
1934
circa 1910
1904
1901
1910
1955; 1830
1907
1902
1872 (original); 1909 (model)
1910
1908
1905
1904
1903
1902-1907
1901-1911
1901-1911
1910
1901
1911
1901
1901
1906
1904
1902
1906
1901
1902
1901-1910
1903
1906
1901
1801-1892 (prepared); 1946 (element replaced)
1903
1908
1910
1907
4000-2001 BCE