6 CORROSION INHIBITORS, RUST AND SCALE INHIBITORS, FUNGICIDES, AND ALGAECIDES
FIRST USE IN OR ABOUT THE YEAR OF 1955 ON CORROSION INHIBITORS AND RUST AND SCALE INHIBITORS; IN COMMERCE 1955 FIRST USE IN OR ABOUT THE YEAR OF 1955 ON CORROSION INHIBITORS AND RUST AND SCALE INHIBITORS; IN COMMERCE 1955