Nonmetallic building materials Trademarks Filed in October 22, 1941
DUROTEX
Filed: October 22, 1941
MATERIAL (IN LIQUID, PASTE, AND POWDER FORM) TO BE ADDED TO A CONCRETE MIX TO RENDER THE CONCRETE SURFACE, WHEN HARDENED…
Owned by: A.F. VAN WOLF
Serial Number: 71448020
K.D.S.
Filed: October 22, 1941
MATERIAL (IN LIQUID FORM) APPLICABLE TO MASONRY, CONCRETE, AND WOOD TO PRODUCE A DAMP-PROOF SURFACE
Owned by: A.F. VAN WOLF
Serial Number: 71448021
