Electric Heating With Work As Conductor (e.g., Alternating Current, Induction, Etc.) Patents (Class 148/566)
- Wire or filament (Class 148/568)
- Railway stock (e.g., rails, wheels, axles, etc.) (Class 148/569)
- Of hollow bodies (e.g., pipe, sphere, etc.) (Class 148/570)
- Rod, axle, shaft, or roller (Class 148/572)
- Gear, threaded article, drill or serrated work surface (e.g., saw blade, etc.) (Class 148/573)
- And cooling with fluid contact (Class 148/574)