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US2133050A
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Sucker rod and combined coupling and torsion joint therefor
|
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US2033157A
|
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Conduit
|
|
US2046348A
|
|
Sucker rod
|
|
US1896112A
|
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Method of constructing and operating oil wells
|
|
US1896111A
|
|
Method of maintaining oil wells in flowing condition and conserving the natural gas supply thereof
|
|
US1880218A
|
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Method of lining oil wells and means therefor
|
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US1896110A
|
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Method of making wells
|
|
US1896109A
|
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Cutter head for well drills
|
|
US1896107A
|
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Underreamer well drilling apparatus
|
|
US1896108A
|
|
Well pumping apparatus
|
|
US1896106A
|
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Core barrel well drilling apparatus
|
|
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|
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Motor driven well drilling apparatus
|
|
US1896105A
|
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Percussive well drilling apparatus
|
|
US1896104A
|
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Cement lining for oil wells
|
|
US1867769A
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Well housing apparatus
|
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US1866943A
|
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Percussive well drilling apparatus
|
|
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|
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Underreamer for well drilling apparatus
|
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US1880215A
|
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Drill head for core barrels
|
|
US1717271A
|
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Well-drilling apparatus
|
|
US1875357A
|
|
Well forming apparatus
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