
Graphite Electrode
2022
2022
before 1889
before 1889
1696-1700
1979
1860
before 1889
before 1889
1976
1890-1930
1820-1824
1996
1996
1996
1996
before 1889
1929
before 1889
1841
1850
1970-1990
1970
1800
1956
circa 1930
1965-1975
1925
101-200 CE