Industrial Electric Heating Furnaces Patents (Class 373)
- Indirect (Class 373/61)
- Ingot remelting (Class 373/67)
- Furnace body detail (Class 373/71)
- Plural furnace units (Class 373/78)
- Charging or discharging (Class 373/79)
- For manipulation of the charge or melt (e.g., stirring) (Class 373/85)
- Electrode (Class 373/88)
- Electrode support (Class 373/94)
- Power supply system (Class 373/102)
- With internal atmosphere control (e.g., pressure, vacuum, etc.) (Class 373/110)
- For cooling (Class 373/113)
- Charging or discharging (Class 373/115)
- For manipulation of the charge or melt (e.g., stirring) (Class 373/116)
- With heating element detail (Class 373/117)
- Control (Class 373/135)
- Lining (Class 373/137)
- Zone melting (Class 373/139)
- With internal atmosphere control (e.g., pressure, vacuum, etc.) (Class 373/140)
- For charging or discharging (Class 373/142)
- Having plural heating elements (Class 373/144)
- Having condition signaling means (Class 373/145)
- With means for manipulation of the charge or melt (e.g., stirring) (Class 373/146)
- Power supply system (Class 373/147)
- For furnace regulating (Class 373/149)
- Coreless (Class 373/151)
- Core-type (i.e., channel) (Class 373/159)
