505 / | HD | SUPERCONDUCTOR TECHNOLOGY: APPARATUS, MATERIAL, PROCESS |
825 | DF | APPARATUS, PER SE, DEVICE, PER SE, OR PROCESS OF MAKING OR OPERATING SAME {36} |
917 | DF | .~ Mechanically manufacturing superconductor: (Classes 29, 72, and 228) {8} |
927 | .~.~ Metallurgically bonding superconductive members |