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Dongying, China

Trademark
Drilling Mud Inc. | Date: 1983-09-13

Chemical Additives for Oil Well Drilling Spotting Fluids.


Trademark
Drilling Mud Inc. | Date: 1983-09-20

Chemicals-Namely, Liquid Polymer Blend for Use in Compounding Quick Viscosity Hole-Cleaning Pills for Use in the Oil Drilling Industry.


Trademark
Drilling Mud Inc. | Date: 1984-04-03

Bentonite Compositions Used to Make Aqueous Gels in the Oil Drilling Industry.


Obe

Trademark
Drilling Mud Inc. | Date: 1983-09-13

Chemicals-Namely, Organic Nitrogen Compound Liquid Emulsifier Designed for Use in Emulsifying Water and Brines into Oil for Use in the Oil Drilling Industry.


Trademark
Drilling Mud Inc. | Date: 1983-10-11

a Liquid Organic Surface Active Composition Used to Promote Preferential Oil Wetting of Solids in Oil Mud Systems for Use in the Oil Drilling Industry.

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