| 257 / | HD | ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) |
| 734 | DF | COMBINED WITH ELECTRICAL CONTACT OR LEAD {14} |
| 741 | DF | .~ Of specified material other than unalloyed aluminum {10} |
| 750 | DF | .~.~ Layered {10} |
| 763 | DF | .~.~.~ At least one layer of molybdenum, titanium, or tungsten {1} |
| 764 | | .~.~.~.~ Alloy containing molybdenum, titanium, or tungsten |