.~.~ Wall-to-wall force fit; or having wall piercing end
DEFINITION
Classification: 410/151
Wall-to-wall force fit; or having wall-piercing end:
(under subclass 143) Structure in which the compartment-spanning member is retained between the side walls either (a) by the tightness of the engagement therewith, or (b) by means of a wall-penetrating prong or