PITTSBURGH STEEL COMPANY Trademarks
CHIEFTAIN
Filed: August 7, 1930
WIRE FENCING
Owned by: PITTSBURGH STEEL COMPANY
Serial Number: 71304343
PITTSBURGH P SEAMLESS
Filed: March 13, 1964
SEAMLESS METAL TUBES, PIPES AND WELL CASINGS
Owned by: PITTSBURGH STEEL COMPANY
Serial Number: 72188661
