Nonmetallic building materials Trademarks Filed in December 10, 1970
KEYWAY
Filed: December 10, 1970
RETAINER FOR STRUCTURAL MEMBERS SUCH AS CONCETE OR CLAY BRICKS, BLOCKS, PANELS, AND SLABS
Owned by: ELKS CONCRETE PRODUCTS, INC.
Serial Number: 72378357
DURAFORM
Filed: December 10, 1970
GYPSUM WALLBOARD
Owned by: NATIONAL GYPSUM COMPANY
Serial Number: 72378376
