34 / | HD | DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS |
523 | DF | APPARATUS {40} |
611 | DF | .~ Sheet, web, or strand {3} |
618 | DF | .~.~ For flexible sheet, web, or strand {6} |
623 | DF | .~.~.~ Running length {5} |
627 | .~.~.~.~ Plural webs or strands {1} | |
628 | DF | .~.~.~.~.~> With means to separate individual webs or strands |