Graphite Electrode
2022
2022
1696-1700
before 1889
before 1889
1979
1860
before 1889
before 1889
1996
1967-1968
1996
1972
1972
1972
1972
1972
1972
1972
1972
1972
1972
1972
1972
1972
1845-1871
1887
1882-1884
1882-1884
1887
1636
1830-1860
1884-1886
1958
1958