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GB130680A
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Improvements in Apparatus for Treating Material with Gas or Vapour.
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CA180801A
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Calcium carbide manufacture
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CA180799A
|
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Carbide manufacture
|
|
CA180800A
|
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Fixation of nitrogen
|
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CA180798A
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Production of ammonia and compounds
|
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CA180797A
|
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Calcium carbide manufacture
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|
GB191418215A
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An Improvement in Retorts or Ovens for Carbonising Coal.
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GB190012336A
|
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Improvements in Apparatus for the Manufacture of Gas.
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|
GB190012335A
|
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Improvements in the Manufacture of Gas.
|
|
GB189506158A
|
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Improvements in and relating to Scrubbing or Purifying of Gases, and in Apparatus therefor.
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GB189415473A
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Improvements in and relating to a Process of Making Green Oxide of Chromium.
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