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GB289228A
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Improvements connected with well pumps
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GB267073A
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Improved means for lifting and handling well casings, well drilling tools and the like
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GB261613A
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Improved means for handling sucker rods pump rods or similar apparatus for use in wells
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GB255821A
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Well apparatus for operating and handling appliances
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GB249807A
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Improved means for raising lowering or otherwise handling casings, rods or the like in wells
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GB241132A
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Improvements in and relating to safety hooks
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DE454890C
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Pipe wrench type tool
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GB235128A
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Improvements in or relating to means for raising or lowering well casings and the like
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US1646981A
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Elevator
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US1660708A
|
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Well elevator
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US1599144A
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Well elevator
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GB223322A
|
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Improvements in or relating to means for raising or lowering well casings, well boring tools or the like
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GB218823A
|
|
Improvements in or relating to means for raising or lowering well casings or the like
|
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US1670048A
|
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Elevator
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|
US1503789A
|
|
Well elevator
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|
GB220268A
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Improvements in or relating to means for raising and lowering well casings, well boring tools and the like
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|
GB220035A
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|
Improvements in or relating to means for raising and lowering well casings, well boring tools and the like
|
|
GB220270A
|
|
Improvements in or relating to means for raising and lowering well casings, well boring tools and the like
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GB219370A
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Improvements in or relating to means for raising casings, boring rods or tubes and the like from wells
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GB219632A
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Improvements in or relating to means for raising casings, boring rods or tubes and the like from wells
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