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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9/00
Sanitary or other accessories for lavatories; ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
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E03D9/04
Special arrangement or operation of ventilating devices
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E03D9/052
using incorporated fans
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