Patent classifications
E
FIXED CONSTRUCTIONS
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E03
WATER SUPPLY; SEWERAGE
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E03D
WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
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5/00
Special constructions of flushing devices; ,; e.g. closed flushing system
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E03D5/01
using flushing pumps
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