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DK8961C
(en)
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Apparatus for Oxidation of Air Nitrogen for the Production of Nitric Acid.
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DK12420C
(en)
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Apparatus for the Production of Nitric Acid.
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DK9147C
(en)
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Process for the production of nitric acid or nitrogen oxides from atmospheric air.
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DK8341C
(en)
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Gas Production Apparatus.
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DK7140C
(en)
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Procedure for the production of nitric acid from air.
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DK9922C
(en)
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Apparatus for the production of air gas.
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DK8214C
(en)
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Method of Manufacturing Carbon dioxide.
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ES38042A1
(en)
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An apparatus for the concentration of sulfuric acid.
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ES37889A1
(en)
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An apparatus for oxidizing azoe from the air to obtain nitric acid.
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DK8080C
(en)
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Apparatus for the production of Kraftgas.
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DK11628C
(en)
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Apparatus for the production of nitrogen oxides by electrical means.
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DK8850C
(en)
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Apparatus for the manufacture of clichés.
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DK9975C
(en)
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Procedure for the production of pure nitric acid in commercial concentration.
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CH35606A
(en)
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Rescue apparatus
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DK7449C
(en)
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Device for the production of hollow metal bodies without joining.
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DK6897C
(en)
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Procedure for the production of nitrogen compounds from the nitrogen of the air.
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CH35664A
(en)
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Air gas apparatus
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CH36925A
(en)
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Air gas apparatus
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CH38468A
(en)
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Air gas apparatus
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CH38043A
(en)
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Skittles apparatus
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FR377529A
(en)
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Kite claims
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CH36405A
(en)
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Circle dividing apparatus
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DK9004C
(en)
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Procedure for the production of difficult-to-freeze nitroglycerin explosives.
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ES44202A1
(en)
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A procedure for the simultaneous manufacture, concentration and purification of sulfuric acid.
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CH38281A
(en)
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Brick wagon
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