Apparatus for electrical perforation of webs

Apparatus for electrically perforating dielectric webs

Apparatus for electrically perforating moving paper webs

Apparatus for electrically perforating moving webs

Apparatus for perforating a moving web

Apparatus for perforating webs of wrapping material for rod-shap

Apparatus for the spark perforation of sheet materials

Apparatus for the spark perforation of sheet materials

Apparatus for treating optical fibers by spark erosion

Arc fusion splicer for optical fibers utilizing low and high acc

Arc heater construction with total alternating current usage

Arrangement for effecting the superfine perforation of film-like

Assembly for use in the spark perforation of sheet material

Corona effect surface treatment apparatus for sheet

Electric arc discharge apparatus

Electric arc heater having outlet gas admission

Fusion welding apparatus for optical fiber

Glow discharge heating apparatus

Glow discharge heating apparatus

Heating device for generating very high temperature