Glass leyden jar from a d'Arsonval-type high-frequency electrotherapy apparatus
1890-1920
Glass leyden jar from a d'Arsonval-type high-frequency electrotherapy apparatus
1890-1920
8 leads for electro-therapy(?), European, 1900-191
1900-1910
Electrode for skin, European, 1900-1930
1900-1930
Glass Leyden jar
1851-1900
Glass Leyden jar
1851-1900
Glass Leyden jar with tin plates
1851-1900
Electrode from high frequency apparatus
1880-1910
Glass Leyden jar
1851-1920
Pair of electrodes for high frequency apparatus
1880-1910