72334249
Aug 1, 1969
Dec 8, 1970
PANEL-LOC SYSTEM INC.
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INTERLOCKING CONSTRUCTION MEMBERS, MADE OF VARIOUS EXTRUDED MATERIALS, FOR USE IN FABRICATING WALL PANELS, FLOORS, ROOFS, LEADERS, GUTTERS, SHUTTERS, DOORS, WINDOWS, HATCH COVVERS, STAIRWELLS, AND THE LIKE