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US1861295A
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Filter
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GB298835A
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Improvements in filters
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US1746186A
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Volumetric-displacement apparatus suitable for controlling the supply of gas for chlorinating water or similar purposes
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GB277869A
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Improvements in volumetric displacement apparatus suitable for controlling the supply of gas for chlorinating water or similar purpose
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US1620431A
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Filtering apparatus
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GB254764A
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Improvements in filtering apparatus
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GB229521A
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An apparatus for removing deposits from tanks, or other liquid containers
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GB228688A
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Improvements in the aeration or gasification of water or other liquids
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GB211313A
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Improvements in apparatus for measuring the flow of liquids and for automatically controlling the proportionate admixture of two or more liquids
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GB211307A
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Improvements in or relating to the separation of impurities from the wash-water of filters
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GB189488A
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Improvements in apparatus for measuring the flow of liquids and for automatically controlling the proportionate admixture of two or more liquids
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GB181044A
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Improvements in or relating to the filtration of liquids
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