204 / | HD | CHEMISTRY: ELECTRICAL AND WAVE ENERGY |
* | DD | PROCESSES AND PRODUCTS {7} |
192.1 | DF | .~ Coating, forming or etching by sputtering {3} |
192.32 | DF | .~.~ Sputter etching {3} |
192.33 | .~.~.~ Measuring or testing (e.g., of operating parameters, end point determination, etc.) |