| 505 / | HD | SUPERCONDUCTOR TECHNOLOGY: APPARATUS, MATERIAL, PROCESS |
| 800 | DF | MATERIAL, PER SE, PROCESS OF MAKING SAME {4} |
| 815 | ![]() | .~ Process of making, per se {5} |
| 816 | DF | .~.~> Sputtering, including coating, forming, or etching (Class 204/192.24) {1} |
| 818 | DF | .~.~> Coating: (Classes 204, 427/62) {3} |
| 822 | DF | .~.~> Shaping: (Classes 148, 264) |
| 823 | DF | .~.~> Powder metallurgy: (Class 419) |
| 824 | DF | .~.~> Battery, thermo or photo-electric: (Class 136) |