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

Weiping Xu

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Electropositive production well treating fluid and method of...

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

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Electropositive production well treating fluid and method of...

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

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Time tracking loop for pilot aided direct sequence spread...

Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate

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