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US872866A
|
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Mud retainer or collector for water-clarifying tanks.
|
|
US840883A
|
|
Drying-drum.
|
|
GB190605867A
|
|
Improvements in Drying-drums for Drying Sediments and other Wet Materials
|
|
GB190605751A
|
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Improvements in Mud Retainers or Collectors for Water Clarifying Tanks.
|
|
US866094A
|
|
Water clarification.
|
|
GB190413436A
|
|
Improvements in Water Clarification.
|
|
US730588A
|
|
Method of extracting the residuary matters from sewer-water.
|
|
GB190110838A
|
|
Improvements in and relating the the Treatment of Sewage, including the Discharge from Factories and the like
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