Comprising cover for core; blank or closure therefor:
(under subclass 569) Subject matter (a) comprising an enclosing outermost layer or envelope intended to be overlaid over the centrally disposed part of a projectile of the type having a centrally disposed member enclosed by an outermost layer or envelope, (b) comprising a piece of material intended to be prepared to be made, either by itself or when joined to others, into such an enclosing outermost layer or envelope, or (c) comprising a means for closing an opening located in such an outermost layer or envelope.