72044878
Jan 29, 1958
Jan 6, 1959
METAL PREPARATION AND PRESERVATIVE COMPOUNDS, INCLUDING MATERIALS FOR IMPARTING PROTECTIVE COATINGS, PARTICULARLY PHOSPHATIZERS TO COAT STEEL AND PREVENT FLASH RUST, MASKING COMPOUNDS, AND GLASS MASKS, ESPECIALLY PROTECTIVE COATING MATERIAL FOR AIRCRAFT WINDSHIELDS USED DURING PAINT STRIPPING AND BRIGHTENING OPERATION
Paper Goods and Printed Matter