Patent classifications
E
FIXED CONSTRUCTIONS
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E02
HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
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E02D
FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
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19/00
Keeping dry foundation sites or other areas in the ground
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E02D19/06
Restraining of underground water
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E02D19/12
by damming or interrupting the passage of underground water
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