E - Fixed Constructions
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EPO-Project »EPO-Project
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Klassifizierung von Patentanmeldungen »Klassifizierung von Patentanmeldungen
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E - Fixed Constructions
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E01 - Construction of Roads, Railways, or Bridges »E01 - Construction of Roads, Railways, or Bridges
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E02 - Hydraulic Engineering, Foundations; Soil Shifting »E02 - Hydraulic Engineering, Foundations; Soil Shifting
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E03 - Water Supply; Sewerage »E03 - Water Supply; Sewerage
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E04 - Building »E04 - Building
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E21 - Earth Drilling; Mining »E21 - Earth Drilling; Mining
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