ES331793A1
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Improvements in the construction of sealing joints. (Machine-translation by Google Translate, not legally binding)
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ES323538A1
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Improvements in the vacuum pumps or compressors of liquid ring and double rotor. (Machine-translation by Google Translate, not legally binding)
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ES301337A1
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Improvements in devices to eliminate heavy solid impurity of a fluid (Machine-translation by Google Translate, not legally binding)
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ES283004A1
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Improvements in gates for hydraulic installations (Machine-translation by Google Translate, not legally binding)
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ES280945A1
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Provision for the mounting of sheets on a rotor (Machine-translation by Google Translate, not legally binding)
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ES277577A1
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Improvements in the pipe-pullers (Machine-translation by Google Translate, not legally binding)
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ES280946A1
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Crushers in crushers (Machine-translation by Google Translate, not legally binding)
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ES219623A1
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A new coupling system of two pieces that present conical or cylindrical surfaces (Machine-translation by Google Translate, not legally binding)
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ES218155A1
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An installation for transport of materials by hydraulic ducts (Machine-translation by Google Translate, not legally binding)
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ES211737A1
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Improvements in vertical axis rotating hydroelectric groups (Machine-translation by Google Translate, not legally binding)
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ES211696A1
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Improvements in the provision of the axis in hydroelectric groups (Machine-translation by Google Translate, not legally binding)
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ES211398A1
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Improvements in appliances to regulate the flow of a current (Machine-translation by Google Translate, not legally binding)
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ES211399A1
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Improvements in automatic gates (Machine-translation by Google Translate, not legally binding)
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ES200262A1
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Improvements in appliances to eliminate the sand of industrial waters (Machine-translation by Google Translate, not legally binding)
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ES193333A1
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Improvements in the construction of bypass branches
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