
Brennan's Gyroscopic Mono-rail Car
1907
1907
1909-1910
circa 1910
1913
1905
c.1912
1907
1952-3
1906
1910
1910
1906
1934
2000-100 BCE
1913
1914
1910
1905
1910
1908
1909
circa 1905
1912
1610; 1923
1910
1955; 1830
1914
1906
1907
1914
1914
1914
1872 (original); 1909 (model)
1912
1911
c.1912
1914
1907
1910
circa 1913
1913
1990-96
1910-1914
1772 (original); 1919 (model)
1839 (original); circa 1988 (replica)
1801-1892 (prepared); 1946 (element replaced)
1934
1908
4000-2001 BCE
1911