205 / | HD | ELECTROLYSIS: PROCESSES, COMPOSITIONS USED THEREIN, AND METHODS OF PREPARING THE COMPOSITIONS |
80 | DF | ELECTROLYTIC COATING (PROCESS, COMPOSITION AND METHOD OF PREPARING COMPOSITION) {42} |
170 | DF | .~ Forming multiple superposed electrolytic coatings {6} |
178 | DF | .~.~ At least one chromium-containing coating {2} |
180 | .~.~.~ At least one predominantly nickel metal coating |