Nonmetallic building materials Trademarks Filed in June 5, 1991
EXCEL-10
Filed: June 5, 1991
skylights
Owned by: WASCO PRODUCTS, INC.
Serial Number: 74173114
ENGINEERED CERAMICS
Filed: June 5, 1991
ceramic shapes for use in refractory furnaces
Owned by: COORSTEK, INC.
Serial Number: 74173803
