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High frequency apparatus with induction coil and capacitor bank, European, 1890-1915

High frequency apparatus with induction coil and capacitor bank

1890-1950
Inductor coil, cased, by E. Ducretet, Paris, French, 1870-1910

Inductor coil

1870-1910
Components for Inductor coil, cased, by E. Ducretet, Paris, French, 1870-1910

Components for Inductor Coil

1870-1910
Inductor coil, cased, by E. Ducretet, Paris, French, 1870-1910

Inductor Coil

1870-1910
Components for Inductor coil, cased, by E. Ducretet, Paris, French, 1870-1910

Components for Inductor Coil

1870-1910