Mark Identification

DUROGEL

Serial Number

73234195

Filing Date

Oct 9, 1979

Registration Date

Dec 15, 1981

Trademark by

MI DRILLING FLUIDS COMPANY

Classification Information

Chemical for Use in Oil and Gas Well Drilling-Namely, a Viscosifier for Use in Formulating High Temperature Stable Water-Base Fluids, Such as Drilling Fluids

Chemicals