D-C arc welding apparatus

D.C. arc welder with solid state components

D.C. chopper with inductance control for welding

D.C. motor driven EDM head

Dam bar cutting apparatus and dam bar cutting method

Damper activation in a combined microwave and electric heating o

Damper apparatus for a microwave oven

Damper drive in microwave heating appliance

Damper drive system in a combined microwave and electric heater

Damper tube closure

Damping device in microwave oven

Data display on a welding screen

Data entry and control arrangement for an appliance

Data input apparatus for microwave oven controllers

Data input apparatus for microwave oven controllers

Data path for high performance pattern generator

Data transmission apparatus, data receiving apparatus, rule...

Data transmitter, data receiver, rule communication device,...

Daylight projection screen and method and apparatus for making t

DC arc plasma torch, for obtaining a chemical substance by decom