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C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
C01B21/00—Nitrogen; Compounds thereof
C01B21/02—Preparation of nitrogen
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Organic Chemistry
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Inorganic Chemistry
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Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means
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FR546178D1920-12-141921-12-14
Process and apparatus for the manufacture of a pure mixture of nitrogen and carbonic acid from combustion gases
ExpiredFR546178A
(en)
Improvements in manufacturing processes for nitrogen and oxygen compounds, more especially nitric acid, starting from ammonia and gas mixtures containing oxygen