.~ With third, detached member completing interlock {4}
573.7
.~.~ Third member consists of unitary elongated element
DEFINITION
Classification: 24/573.7
Third member consists of unitary elongated element:
(under subclass 573.1) Separable-fastener* wherein the dissociable member consist of a slender element formed from a single piece of material having no appendages along it length.