Assignee

GRAY KENNETH W

US·1 granted patent·24 citations·filing 1987–1987

Technology mixB05D1 B23P1 E21B1 Y10T1

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0168US4823456AMethod for protecting sucker rod couplings from abrasion and corrosionGRAY KENNETH W·Filed 1987·Granted Apr 25, 1989·24 cites·11 claims

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