PRESERVATEX
MATERIALS (IN LIQUID FORM), APPLICABLE TO CONCRETE (OR THE LIKE) FOR PURPOSES (A) HARDENING, (B) FINISHING, (C) WATERPROOFING, (D) SEALING, (E) ACIDPROOFING, AND/OR (F) STAINING THE CONCRETE (OR THE LIKE
Expired · March 8, 1943 · 71458978 ·