Mark Identification

GASBLOK

Serial Number

73427513

Filing Date

May 25, 1983

Registration Date

Jun 17, 1986

Trademark by

COMPAGNIE DES SERVICES DOWELL SCHLUMBERGER SOCIETE ANONYME FRANCAISE

Classification Information

Cement for Well Bores, Additives for Well Bores and Cement-Based Products for Well Bores

Chemicals

Providing Drilled Well Conditioning and Cementing Services

Computer and Scientific