206 / | HD | SPECIAL RECEPTACLE OR PACKAGE |
515 | STRUCTURAL FEATURES FOR NESTING IDENTICAL RECEPTACLES OR CLOSURES {4} | |
516 | DF | .~> With separate cushion or spacer means |
517 | DF | .~> Distortable for nesting or components of "knockdown" receptacles |
518 | DF | .~> Noncircular receptacles (e.g., trays) |
519 | DF | .~> Having defined means to limit extent of nesting {1} |