Search Results for: Carbon electrodes used for furnaces
(class / ) inorganic carbon containing coating, not as steel (e.g., carbide, etc.)
(class / ) photoelectric (class / ) electron emissive or suppressive (excluding electrode for arc) (class / ) condenser or capacitor (class / ) integrated circuit, printed circuit, or circuit board (class / ) piezoelectric properties (class / ) resistor for current control (excludes heating element)...
https://patents.justia.com/patents-by-us-classification/427