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US1482162A
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Device for aligning pipes for connection
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US1494196A
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Rod for connecting the driving crank with the operating arm of earthboring devices
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US1482163A
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Method of and means for freeing jammed earth-boring columns
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US1487489A
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Rock and like drill
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US1495618A
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Pipe wrench
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GB207900A
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Improvements relating to tanks for the storage and transport of petroleum and the like
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GB208212A
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An improved method of and apparatus for freeing gripped pipe-or tube-columns in oil,gas or water wells
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GB203898A
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An improvement in bailers for oil wells and like purposes
|
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GB206626A
|
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Improvements in casing-heads for oil wells
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GB207597A
|
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Improvements relating to apparatus for actuating the tools and accessories used in drilling wells
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GB206272A
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Improvements in tongs or wrenches for tubes, more especially casing tubes for wells
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GB206594A
|
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Improvements relating to apparatus for actuating the tools and accessories used in drilling wells
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GB201413A
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Improvements in apparatus for actuating the tools and accessories used in drilling wells
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GB205253A
|
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An improved casing drive shoe for rotary, percussion and pressure well-boring
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GB204454A
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A device for facilitating the screwing together of lengths of piping
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GB204174A
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An improved device for securing screw joints
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GB205874A
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Improvements relating to apparatus for boring wells by percussion
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