204 / | HD | CHEMISTRY: ELECTRICAL AND WAVE ENERGY |
* | DD | PROCESSES AND PRODUCTS {7} |
450 | DF | .~ Electrophoresis or electro-osmosis processes and electrolyte compositions therefor when not provided for elsewhere {14} |
471 | DF | .~.~ Coating or forming of object {13} |
475 | DF | .~.~.~ Rubber or vulcanizable gum used to coat or form {1} |
476 | .~.~.~.~ Sheet, web, wire, or filament of indeterminant length formed or coated |