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US3814184A
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Well-points for de-watering ground
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GB1407590A
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Laying tubing in trenches to dewater ground
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GB1385193A
|
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Well points
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GB1357326A
|
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Wellpoints for de-watering ground
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GB1342086A
|
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Fluid flow control valves
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GB1350752A
|
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Rotary shaft seal
|
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GB1322702A
|
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Multistage self-priming centrifugal pumps
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GB1223301A
|
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Improvements in or relating to stuffing boxes
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GB1209827A
|
|
Improvements in or relating to centrifugal pumps
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GB1219506A
|
|
Improvements in or relating to ball valve seating
|
|
GB1187241A
|
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Improvements in Valves and in particular Footvalves
|
|
US3296973A
|
|
Centrifugal pumps
|
|
GB1012282A
|
|
Improvements in or relating to wellpoints for de-watering ground
|
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GB1048272A
|
|
Improvements in or relating to centrifugal pumps
|
|
GB1048271A
|
|
Improvements in or relating to pipe couplings
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|
GB972536A
|
|
Improvements in fluid operated reciprocating engines
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GB902452A
|
|
Improvements in stuffing boxes
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GB826523A
|
|
Improvements in pile helmets
|
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GB851892A
|
|
Improvements in and relating to footvalves
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GB779661A
|
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Improvements in footvalves
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