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GB468019A
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Improvements in electro-filters
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GB444862A
|
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Improvements in or relating to rotary furnaces
|
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GB444878A
|
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Improvements in or relating to furnace linings
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GB303760A
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A process of decomposing salts of complex hydrofluoric acids
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GB275222A
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Improvements in and relating to furnaces
|
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GB271440A
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An improved process of producing soluble hydrates of the alkali metals
|
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GB269491A
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A process of producing complex fluorides
|
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GB272733A
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A new or improved process of producing metal compounds
|
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GB265880A
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|
A new or improved process of producing metal compounds
|
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US1730915A
|
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Process for the decomposition of complex hydrofluoric salts
|
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GB249860A
|
|
A process of decomposing salts of complex hydrofluoric acids
|
|
GB250211A
|
|
Process for the production of complex hydrofluoric acids
|
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US1701225A
|
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Process for the production of pure hydrofluoric acid from polluted fluorspars
|
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US1683159A
|
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Process for the production of soluble salts of organic compounds possessing acid character
|
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US1675786A
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Process for the production of carbonates
|
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US1664348A
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Process for the production of hydrofluoric acid from fluoric and silicic substances
|
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GB253149A
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A new or improved process of producing metal compounds
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|
GB253150A
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A new or improved process of producing metal compounds
|
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GB245719A
|
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A new or improved process of producing metal compounds
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DE514537C
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Processing of ores and intermediate products containing zinc, lead and copper
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