PITTSBURGH-DES MOINES STEEL COMPANY Trademarks
TUBESEAL
Filed: October 6, 1959
FLOATING ROOF APPARATUS TO BE ASSEMBLED IN THE FIELD INTO OIL STORAGE TANKS
Owned by: PITTSBURGH-DES MOINES STEEL COMPANY
Serial Number: 72082767
WEATHERSHIELD
Filed: January 12, 1961
FLOATING ROOF APPARATUS TO BE ASSEMBLED IN THE FIELD INTO OIL STORAGE TANKS
Owned by: PITTSBURGH-DES MOINES STEEL COMPANY
Serial Number: 72111757
TULIP TANK
Filed: January 22, 1968
ELEVATED STORAGE TANKS
Owned by: PITTSBURGH-DES MOINES STEEL COMPANY
Serial Number: 72289332
