Nonmetallic building materials Trademarks Filed in April 28, 1948
CORHART
Filed: April 28, 1948
REFRACTORY BLOCKS FOR FURNACES
Owned by: Saint-Gobain Ceramics & Plastics, Inc.
Serial Number: 71555736
STASET
Filed: April 28, 1948
REFRACTORY MATERIAL FOR USE IN METALLURGICAL FURNACES
Owned by: MARTIN MARIETTA CORPORATION
Serial Number: 71564029
