73099810
Sep 14, 1976
Sep 6, 1977
ROOFING SHEETS, BOTH FLAT AND CORRUGATED, AND PREFORMED ROOFING ARTICLES-NAMELY, RIDGE CAPS, VENTILATORS, CHIMNEY POTS, FLASHINGS, GUTTERS, DOWNSPOUTS AND THE LIKE, ALL FORMED OF A THERMOPLASTIC MATERIAL COMPOSED OF FIBROUS MATERIALS AND BITUMEN
Nonmetallic Building Materials