PITT-DES MOINES, INC. Trademarks
BUOYROOF
Filed: September 24, 1971
FLOTABLE TANK ROOFS
Owned by: PITT-DES MOINES, INC.
Serial Number: 72403543
PDM
Filed: May 15, 1981
Metal Storage Tanks and Roofs Thereof
Owned by: PITT-DES MOINES, INC.
Serial Number: 73310472
PDM
Filed: August 6, 1986
CONSTRUCTION OF SEWAGE TREATMENT PLANTS FOR OTHERS
Owned by: PITT-DES MOINES, INC.
Serial Number: 73613284
HYDROLEVEL
Filed: January 4, 1993
electronic liquid level indicator apparatus
Owned by: PITT-DES MOINES, INC.
Serial Number: 74345328
PDM
Filed: February 1, 1993
construction of bridges, buildings, tanks and vessels for others
Owned by: PITT-DES MOINES, INC.
Serial Number: 74354300
