Procedure for adjusting capacity inequalities in telephone cables
DE542726C
Electrically heated umbrella hen
DE552677C
Chamber switch in which the pieces required for the line connection are completely embedded in insulating material and brush-like contact springs within window-shaped cutouts arranged in the insulating material rest on both sides on a switch blade that can be rotated inside the switching chamber
DE532385C
Device for heating the wings of aircraft to prevent ice formation
DE449756C
Electrode arrangement for electric liquid heater
DE440626C
Protective covering for electric boiler
DE458334C
Electric boiler for relatively low voltages
DE444865C
Device for water movement in electrode boilers
DE413085C
Insulation testing device on wire enamelling machines
DE435213C
Electric heating plate
DE416684C
Resistance element for electric water heaters or steam boilers
DE411819C
Electric liquid heater
DE413342C
Electrically operated steam boiler
DE406503C
Device for the electrical heating of fluids which themselves form the heating resistance
DE423650C
Drying oven with electric heating
DE406139C
Device for the electrical heating of fluids which themselves form the heating resistance
DE376424C
Device for the electrical heating of liquids which themselves form the heating resistance
DE326320C
Support frame for winding electrical resistance or heating elements
DE338162C
Electric liquid heater
DE627177C
Electric liquid heater in which the liquid forms the heating resistance
