Nonmetallic building materials Trademarks Filed in December 30, 1981
SILENTROOM
Filed: December 30, 1981
Prefabricated Soundproof Rooms
Owned by: Aeroacoustic Corporation
Serial Number: 73343851
DT
Filed: December 30, 1981
Refractory Brick
Owned by: GENERAL REFRACTORIES COMPANY
Serial Number: 73343855
