Drispac Trademarks

DRISPAC
DRILLING MUD ADDITIVE-NAMELY, A POLYANIONIC CELLULOSE DERIVATIVE TO CONTROL VISCOSITY AND GEL STRENGTH
Registered  ·  September 23, 1964  ·  72202425  · 
drispac
DRISPAC PLUS
DRILLING MUD ADDITIVE, NAMELY A POLYANIONIC CELLULOSE DERIVATIVE TO CONTROL VISCOSITY AND GEL STRENGTH
Cancelled  ·  July 17, 1989  ·  73812771  ·