| 556 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
| * | DD | ORGANIC COMPOUNDS (Class 532, Subclass 1) {3} |
| 170 | DF | .~ ALUMINUM CONTAINING {11} |
| 187 | DF | .~.~ Processes of preparing, purifying or recovering compounds having plural carbons bonded directly to the same aluminum {2} |
| 188 | | .~.~.~ Aluminum containing alloy or elemental aluminum utilized {1} |
| 189 | DF | .~.~.~.~> And utilizing a material which contains a metal other than aluminum |