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GB191510705A
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Improvements in or in connectiion with the Purification of Water.
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CA147465A
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Filter
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US1057328A
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Filter.
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GB191122955A
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Improvements in or in connection with Filters.
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GB191101336A
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New Manufactures for use in Filters.
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GB191101337A
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New Means for use in Washing or Scouring Filtering Material in Filters.
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CA131060A
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Water purification
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GB191003397A
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Improvements in Means for Automatically Controlling Rate of Passage of Fluid Matter Proportionally to the Rate of Flow of a Stream of Liquid.
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GB190927607A
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Improvements in Apparatus for use in or in connection with the Purification of Water.
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GB190908296A
|
|
Improvements in the Purification of Water.
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GB190904212A
|
|
Improvements in the Purification of Water.
|
|
GB190824430A
|
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Improvements in the Purification of Potable Waters.
|
|
GB190822524A
|
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Improvements in Filters.
|
|
GB190809665A
|
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Improvements in or in connection with the Purification of Water by Filtration and in Apparatus for use therein.
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|
GB190806363A
|
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Improvements in and in Means or Arrangements for Hardening and Aerating Water.
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GB190804911A
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Improvements in Apparatus for use in Coating Roads Footpaths Playgrounds or the like with Tar or other suitable Fluid
|
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GB190714981A
|
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Improvements in Filtering Apparatus
|
|
GB190712442A
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Improved Apparatus for use in connection with the Dressing of Roads and such like Surfaces with Tar or other suitable Substance or Substances.
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|
GB190708527A
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Improvements in Apparatus for use in Dressing Roads Footways an the like with Tar or Mixtures of Tar and other Matters.
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GB190705404A
|
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Improvements in Apparatus for use in Dressing Roads Footways and the like with Tar or Mixtures of Tar and other Matters.
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