
Interrupter for induction coil (early form)
1870
1870
1870
1870
1859; 1986
1870
1888-185
1945-50
1868
1869
20-400
1-79 CE; before 1914
1370-1350 BCE; 1931
30-200
1931; 250 BCE
2000-1350
20-500
1370-1350 BCE; 1931
20-500
20-400
1870
1940-1050
2000-1000
3500-1000
2000-1350
1870
1972-3
circa 1868
2000-1000
1880-120
1870-1850
1871-1830
1870
1915-1825
1901-950
1870
circa 1870
1870
1870
1870
circa 1870
1870
circa 1870
circa 1870
1868
1869
1868
circa 3000 BCE
2000 BCE
1868
1870