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US2235289A
|
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Stuffing box
|
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US2052389A
|
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Automatic power control mechanism
|
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US2001458A
|
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Safety plug
|
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US1946576A
|
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Pressure recording gauge
|
|
US1946575A
|
|
Pressure recording gauge
|
|
US1759301A
|
|
Apparatus for cooling compressor valves and compressed fluids
|
|
US1701805A
|
|
Explosion arrester
|
|
US1760124A
|
|
Apparatus for extracting combustible vapors from liquid petroleum
|
|
US1548012A
|
|
Method of and apparatus for stopping leaks in the casing of oil and gas wells
|
|
US1499509A
|
|
Method of and apparatus for removal of fluids from wells
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CA157813A
|
|
Method of working oil wells
|
|
CA157811A
|
|
Method of working oil wells
|
|
CA157812A
|
|
Process of increasing the production of oil
|
|
US1107416A
|
|
Method of restoring and increasing the production of oil and gas wells.
|
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US1067868A
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Method of increasing the productiveness of oil-wells.
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