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ZA9901737B
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Telescopic hose and related desludge drive systems.
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ZA9205889B
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Removal of solids from liquids
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GB1026414A
|
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Improvements in methods for removal of scum and apparatus therefor
|
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GB1016843A
|
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Filter bed operating system
|
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GB900153A
|
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Improvements in valves for controlling fluids
|
|
GB729436A
|
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Improvements in filter bed agitation
|
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GB669188A
|
|
Improvements in lime feeding processes and apparatus for preparing and feeding the lime
|
|
GB634674A
|
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Improvements in suction sweepers
|
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GB610412A
|
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Improvements in back washing filter beds
|
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GB581757A
|
|
Improvements in pressure filters and water purification plants
|
|
GB613914A
|
|
Improvements in apparatus for maintaining a constant liquid level
|
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GB586820A
|
|
An improved nozzle for use in water filters
|
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GB574952A
|
|
Improved means for maintaining constant differential pressure on valves, particularly for use in the gravity dosing of chemical solutions
|
|
GB565726A
|
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An improved valve for regulating low-pressure liquid flow, particularly in the dosing of one liquid with another
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