(under the class definition) Device comprising a member insertable in or defining an opening forming a passageway, combined with means particularly adapted for cooperation with opening or closing movement of a closure, e.g., a stop.
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381+, for a frame combined with means for mounting a closure for swinging movement.
404+, for a frame combined with means mounting a closure for reciprocating movement.
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52, Static Structures (e.g., Buildings), 204.1+, for a building structure with a feature for a portal, and subclasses 656.2+ for a cornered or peripheral border in an openwork structure.
