2014 01 15 2 E-Motor von Jacobi.jpg
author}}
en
2014 01 15 2 E Motor von Jacobi, Jacobi electric motor, History of electric motors, Early electric motors
commons
ja
2014 01 15 2 Eモーターフォンヤコビ、ヤコビ電動機、電動機の歴史、初期の電動機
commons_translated
electromechanical electric motor motor area starter jacobi self-starter