| 505 / | HD | SUPERCONDUCTOR TECHNOLOGY: APPARATUS, MATERIAL, PROCESS |
| 825 | DF | APPARATUS, PER SE, DEVICE, PER SE, OR PROCESS OF MAKING OR OPERATING SAME {36} |
| 912 | DF | .~ Metal founding: (Class 164) {1} |
| 913 | ![]() | .~.~ Casting process {3} |
| 914 | DF | .~.~.~> Using magnetic or electric field |
| 915 | DF | .~.~.~> Making composite product |
| 916 | DF | .~.~.~> Continuous casting |