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US3297101A
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Apparatus for boring a hole in rock
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GB988162A
|
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Improvements in or relating to a machine for driving tunnels, wells, ducts and the like
|
|
GB972725A
|
|
Improvements in or relating to methods of and apparatus for driving galleries, tunnels, ducts or the like
|
|
GB723243A
|
|
An improved method of and apparatus for the boring of galleries, tunnels, channels, shafts or the like
|
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US2758825A
|
|
Machine for boring galleries, tunnels, channels and the like by cutting action
|
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GB688098A
|
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A mobile air compressor set
|
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US2396627A
|
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Percussive tool operated by internal-combustion engines
|
|
GB481503A
|
|
Improvements in or relating to pile-driving and the like
|
|
GB425828A
|
|
Improvements in and relating to travelling motor compressors
|
|
GB440140A
|
|
Improvements in and relating to apparatus for driving or withdrawing piles, stakes, or the like
|
|
US2068045A
|
|
Piston pile driver
|
|
US2074293A
|
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Traveling motor compressor
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