Circuit arrangement for an electric melting furnace

Circuit programming by use of an electrically conductive light s

Circuitry for teaching soldering and practice circuit board for

Coated windshield with special heating circuit for wiper arm sto

Combination heater-light-ventilator unit

Condition responsive control circuit

Conductive infrared window

Continuous feed volumetric heating and convection oven

Continuous microwave furnace having a plurality of furnace modul

Continuous microwave rotary furnace for processing sintered cera

Continuous processor for photographic films or the like

Continuous product conveyor having a brick baking hearth

Control panel unit and timer unit and method therefor

Control process for operating a parallel-resonant circuit invert

Conveyorized oven with automated door

Cooker

Coupled-waveguide microwave applicator for uniform processing

Developer apparatus

Device for delivering a collimated beam such as a laser beam

Device for focusing a light beam and machine for welding optical