Patent classifications
E
FIXED CONSTRUCTIONS
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E03
WATER SUPPLY; SEWERAGE
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E03F
SEWERS; CESSPOOLS
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E03F5/10
Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
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E03F5/105
Accessories, e.g. flow regulators or cleaning devices
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E03F5/107
Active flow control devices, i.e. moving during flow regulation
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