| 505 / | HD | SUPERCONDUCTOR TECHNOLOGY: APPARATUS, MATERIAL, PROCESS |
| 800 | DF | MATERIAL, PER SE, PROCESS OF MAKING SAME {4} |
| 815 | DF | .~ Process of making, per se {5} |
| 818 | ![]() | .~.~ Coating: (Classes 204, 427/62) {3} |
| 819 | DF | .~.~.~> Vapor deposition |
| 820 | DF | .~.~.~> And etching |
| 821 | DF | .~.~.~> Wire |