Τίτλος
ELE53
Electric alphabetic telegraph for Latin alphabet
Ηλεκτρικό κουδούνι – Electric bell Electric bell
Κουδούνια του Φραγκλίνου – Electric chimes Electric chimes
Electric egg
Electric Egg
Electric machine after Ramsden
Electric machine after Ramsden
Electric machine after Wimshurst
Electric motor

Σελίδες