Brake Controls for Rail Vehicles; Door Control Boxes and Pneumatic Door Operators for Rapid Transit and Commuter Cars

SEMICONDUCTOR DEVICES AND ASSEMBLIES THEREOF; ELECTRICAL AND ELECTRONIC CONTROL APPARATUS, INSTRUMENTS AND DEVICES FOR PROVIDING CONTROLLING INPUTS TO SEMICONDUCTOR DEVICES AND TO ELECTRICAL POWER SUPPLY APPARATUS [ AND BATTERY CHARGING APPARATUS UTILIZING SEMICONDUCTOR DEVICES ]

RAILWAY BRAKING APPARATUS AND PARTS AND FITTINGS THEREOF