Card-index-type data-storage system

摘要

The cards in the stack slide in relation to each other to allow insertion of data sheets, and have protruding lateral denoting tags along one side, together forming a stepped pattern in the stack. Each card (1a-1e) has a tag (10a-10c) on one edge, and forming a stepped pattern in conjunction with others in the stack. On alternate cars the tags are on lengthwise and transverse edges.