
Brennan's Gyroscopic Mono-rail Car
1907
1907
1952-3
1830 (original); 1967 (model)
1907
1910
1906
1907
1872 (original); 1909 (model)
c.1912
1911
1955; 1830
1906
1910
1910
1906
1934
2000-100 BCE
1910
1908
1909
1912
1910
1912
1910
1907
1908
1705-1737
1910
c.1912
c.1912
1911
1934
1930 (replica); 1834 (original)
1801-1892 (prepared); 1946 (element replaced)
1908
4000-2001 BCE
1839 (original); circa 1988 (replica)
c.1912
c.1912
1903 (original); 1982 (model)
1907
1668; 1924
1990-95
1902; 1913-1920
1610; 1923
1910
1925; 1862
1912
1936
1909