
Prototype bicycle with variable stroke
1982
1982
1970
circa 1990
circa 1880
1962
1961
1982
1948
1893
1884
1930
1850-1869
1878-1882
1949
1923
1865
1902-1907
1878-1886
1982
1936
1920
1885
1890
1879
1897
1982
circa 1885
1878
circa 1900
circa 1920
1875-1880
1993
1993
1950
1886
1907