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US1584579A
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Material for use in cement compositions
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US1691266A
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Process of treating liquids
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US1613448A
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Siliceous composition of matter
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US1603314A
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Process of treating liquids
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US1632458A
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Filter aid and process of making same
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US1611791A
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Process of and apparatus for treating minerals
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GB256021A
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A refractory heat insulating material and process of manufacturing same
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US1574380A
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Article of manufacture and process of making same
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US1590132A
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Heat-insulating composition and process of making the same
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US1544433A
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Semirefractory heat-insulating composition, products and processes of making the same
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US1544196A
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Heat-insulating composition
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US1570537A
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Absorbent material and process of making same
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US1574363A
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Siliceous alkalline-earth product and process of making the same
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US1520893A
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Semirefractory heat insulating material and method of making the same
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GB229021A
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Treatment of diatomaceous earth
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US1586486A
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Process of treating sugar-beet diffusion juice
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US1477394A
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Art of filtration
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US1503133A
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Process for the production of a filtration accelerator
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US1579171A
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Process of filtration and treatment of liquids
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US1569695A
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Apparatus for deemulsification of oils, etc.
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