4. Earth boring, well treating, and oil field chemistry
  5. Earth boring
  6. Contains organic component

Chemical Services Limited

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Composition and emulsifier

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate

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Drilling mud additive

Earth boring – well treating – and oil field chemistry – Earth boring – Contains organic component
Patent

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Homogenisation valve

Agitating – Having specified feed means – Pump forces material through restriction
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1920025

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