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US3027652A
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Methods and means for simultaneously cleaning and drying finely divided mineral matter such as coal and the like
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US2853744A
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Silo structure
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US2524947A
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Concrete composition
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US2531998A
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Carbonization apparatus
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US2468695A
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Method of making unit dispensing packages
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US2240590A
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Automatic fluid cooled grate
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US2227951A
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Process for carbonizing coal
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US1639417A
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Method of carbonizing fuel
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US1639391A
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Process of distilling and gasifying solid carbonaceous fuel
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US1639356A
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Process of making activated carbon
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US1639390A
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Carbonizing apparatus
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US1714198A
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Apparatus for treating oils
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US1561758A
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Apparatus for distilling oil
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US1358664A
|
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Process for distilling carbonaceous material
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US1358663A
|
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Process for carbonizing carbonaceous materials
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US1358662A
|
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Apparatus for distilling carbonaceous materials
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US1040064A
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Game apparatus.
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US935712A
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Combined wedge and balancing-weight for axes.
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CA337040A
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Air pre-heater and mixture gasifier
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