- Electrical furnaces, ovens, & heating devices, exc.induction (2)
- Heating units and devices, industrial: electric (6)
- Distillation ovens, charcoal and coke (1)
- Induction and dielectric heating equipment (1)
- Dielectric heating equipment (1)
- Ceramic kilns and furnaces (1)
- Driers and redriers, industrial process (1)
