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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E03D5/02
operated mechanically or hydraulically; (or pneumatically) also details such as push buttons, levers and pull-card therefor
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E03D5/026
Devices preventing overflow or locks inhibiting the use of the flushing system; ; Devices preventing sucking-up of sealing and flushing water
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