
Roller bearing type N.L. 30; 1921 branded Norma
1921
1921
1956
1903
1898
1935
1920
1800-1850
1917
1935
1923
1956
1925
1956
1909
1787 Date of patent
1898
1901
1895-1898
1937
1898
1910-1920
1931
1920
1925
1920
1920
1935
1922
1934
1920
1920-1926
1910
1892-1906
circa 1937