Nonmetallic building materials Trademarks Filed in March 6, 1961
FIRMCAST
Filed: March 6, 1961
HYDRAULIC SETTING CASTABLE REFRACTORY
Owned by: H.K. PORTER COMPANY, INC.
Serial Number: 72114996
DURA-PLY
Filed: March 6, 1961
PROTECTIVE COVERING FOR UNDERGROUND PIPELINES
Owned by: TRENTON CORPORATION, THE
Serial Number: 72115016
