ULTRASWEEP
Natural Fiber-Namely, Pulverized Cotton Linters Having an Average Length of No More than One Inch, Treated with Chemicals-Namely, Alkali Metal Silicates, Alkali Metal Hydroxides and Alkyl Aryl Polyalkoxylated Alcohols, for Filterings and Hole Sweeping Operatings in Connection with Oil Well Drilling Operations
Cancelled · January 29, 1982 · 73347812 ·