C09K13/00 | Etching, surface-brightening or pickling compositions |
Note(s) In groups C09K 13/02-C09K 13/12, the last place priority rule is applied, i.e. at each hierarchical level, in the absence of an indication to the contrary, a composition is classified in the last appropriate place. [2] |
Descriptions for C09K13/00 and notes/indexes are displayed on this screen.