Chemicals Trademarks Filed in January 7, 1958
SUPER-YIELD

SUPER-YIELD

Filed: January 7, 1958
DRY MIXTURE OF GROUND SEMI-COLLOIDAL CLAY, HIGHLY COLLOIDAL CLAY, AND SODA ASH FOR USE IN DRILLING MUD
Owned by: DRESSER INDUSTRIES, INC.
Serial Number: 72043560

SUPER-SEAL

SUPER-SEAL

Filed: January 7, 1958
CELLOPHANE FLAKES FOR USE IN DRILLING MUDS
Owned by: DRESSER INDUSTRIES, INC.
Serial Number: 72043561

SUPER-SAL

SUPER-SAL

Filed: January 7, 1958
DRY GROUND NATIVE CLAY FOR USE IN DRILLING MUD
Owned by: DRESSER INDUSTRIES, INC.
Serial Number: 72043562