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About 1 Trademarks found for “DUOFRAC”

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299662
REGISTERED

on 16 Jun 1967

DUOFRAC

SCHLUMBERGER TECHNOLOGY CORPORATION ( A TEXAS CORPORATION)

299662 · 17 Sept 1966

001

040

Well treating service--namely, hydraulic fracturing and acidizing, wit...

Owners

Schlumberger technology corporation ( a texas corporation) (1)

Categories

Class 1 (1)

Class 40 (1)

Correspondents

Gowling wlg (canada) llp (1)

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