430 / | HD | RADIATION IMAGERY CHEMISTRY: PROCESS, COMPOSITION, OR PRODUCT THEREOF |
495.1 | DF | RADIATION SENSITIVE PRODUCT {7} |
523 | DF | .~ Identified backing or protective layer containing {5} |
524 | .~.~ Metal {2} | |
525 | DF | .~.~.~> And another backing layer other than aluminum oxide |
526 | DF | .~.~.~> Aluminum |