Johnson Rahbek Electrostatic Telephone
Telephone from, Johnson Rahbek electrostatic telephone with motor and controlling potentiometer
- Object Number:
- 1926-286/1
- type:
- telephone
Johnson Rahbek electrostatic telephone with motor and controlling potentiometer
Telephone from, Johnson Rahbek electrostatic telephone with motor and controlling potentiometer
Potentiometer from, Johnson Rahbek electrostatic telephone with motor and controlling potentiometer