Nonmetallic building materials Trademarks Filed in March 12, 1958
BRIK-CRETE
Filed: March 12, 1958
HYDRAULIC SETTING CLAY BASE CASTABLE REFRACTORY
Owned by: GENERAL REFRACTORIES COMPANY
Serial Number: 72047573
GREFITE
Filed: March 12, 1958
GRAPHITE-BASE PLASTIC FIREBRICK
Owned by: GENERAL REFRACTORIES COMPANY
Serial Number: 72047574
