24 / | HD | BUCKLES, BUTTONS, CLASPS, ETC. |
572 | DF | SEPARABLE-FASTENER OR REQUIRED COMPONENT THEREOF {5} |
573.1 | DF | .~ With third, detached member completing interlock {4} |
573.3 | .~.~ Third member includes independently engaged hooks for linking spaced cavities {1} | |
573.4 | DF | .~.~.~> And movably connected, noninserted gate for closing access throat of hook |