Improvements in variable electrical resistances and potentiometers
GB716737A
Improvements in variable electrical resistances and potentiometers
GB708069A
Means for making a low torque resilient contact with an element, more particularly with the winding of a variable electrical resistance or potentiometer
GB675070A
Improvements in variable electric resistances, potentiometers and the like
GB649438A
Improvements in variable electric resistances or potentiometers
GB616605A
Improvements in and relating to lighters
GB582476A
An improved contact device for potentiometers and other like electrical apparatus
GB573009A
Improvements in and relating to electrically heated hair waving or curling apparatus
GB542225A
Improvements in and relating to coil winding machines
GB542224A
Improvements in and relating to machines for winding electric toroidal coils
GB534838A
Improved method of and apparatus for producing toroidal and similar windings
