| 96 / | HD | GAS SEPARATION: APPARATUS |
| 15 | DF | ELECTRIC FIELD SEPARATION APPARATUS (E.G., ELECTRICAL PRECIPITATOR, ELECTROSTATIC TYPE, ETC.) {17} |
| 75 | DF | .~ Plural diverse electric fields {2} |
| 77 | DF | .~.~ Serially arranged ionizing and collecting or agglomerating fields {1} |
| 78 | DF | .~.~.~ Adjacent parallel collector electrodes are differently charged {1} |
| 79 | ![]() | .~.~.~.~ Collecting electrodes are flat plates |