- Gramme System Machine, c. 1880...
- Elster & Geitel System High-Tension Transform...
- Leybold DC Electric Motor...
- Early AEG Electric Motor, c. 1890...
- Group of Electric Measuring Instruments...
- Electromagnetic Rotating Motor, c. 1860...
- Electromagnetic Motor, c. 1890...
- "Improved Magneto-Electric Shock Machine", c....
- 2 Small Toy Motors, c. 1920...
- Electromagnetic Motor with Pump, c. 1880...