Cellular floor construction

Claim 1

IN A CELLULAR FLOOR CONSTRUCTION, THE COMBINATION COMPRISING A LOWER ELEMENT, AN UPPER ELEMENT COOPERATING WITH SAID LOWER ELEMENT TO FORM LONGITUDINALLY EXTENDING SPACED CELLS AND INTERVENING PORTIONS, EACH SAID UPPER ELEMENT HAVING LONGITUDINALLY EXENDING FLANGES CONTACTING THE LOWER ELEMENT, A PLURALITY OF LONGITUDINALLY SPACED CIRCULAR OPENINGS IN THE LOWER ELEMENT UNDERLYING ONE OF SAID FLANGES, A PLURALITY OF LONGITUDINALLY SPACED TABS ELONGATED IN THE DIRECTION OF SAID CELLS ADJACENT SAID CIRCULAR OPENINGS AND CONNECTED TO THE LOWER ELEMENT BY WEAKENED LINES, THE EDGE OF SAID FLANGE WHICH OVERLIES SAID CIRCULAR OPENINGS EXTENDING LATERALLY AND TERMINATING BETWEEN SAID CIRCULAR OPENINGS AND SAID TABS, WHEREBY SAID TABS CAN BE STRUCK OUT TO PERMIT INSERTION OF A BAR STOCK HANGER THROUGH THE OPENINGS THEREBY FORMED OR SAID PORTION OF SAID LOWER ELEMENT BETWEEN SAID CIRCULAR OPENING AND SAID TAB MAY BE BENT DOWNWARDLY TO PERMIT INSERTION OF A WIRE HANGER.