THERCON

HEATING, LIGHTING AND VENTILATING APPARATUS-NAMELY, UNDERGROUND HEATING PIPE LINES INCLUDING STEAM LINES, CONDENSATE RETURN LINES, HOT WATER SUPPLY LINES AND HOT WATER RETURN LINES, INTERNAL VENTS AND DRAINS AND PARTS THEREOF

VINYL PLASTIC CASING MATERIAL CONSISTING OF INDIVIDUAL EXPANDED POLYSTYRENE BEADS FORMING AN INSULATING MATERIAL AND COVERED WITH A WATERPROOF ENVELOPE; AND VINYL PLASTIC SHEET AND ROLL FORM

CONSTRUCTION MATERIALS-NAMELY, SHEATHING, AGGREGATES, PRE-MIXED AGGREGATES POLYSTYRENE BEADS AND MEMBRANES