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DK8002C
(en)
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Device for regular supply of waste or sewage water and the like to a filtration layer.
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FR353130A
(en)
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water purifier
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CH34091A
(en)
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Water drainage tap
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DK9966C
(en)
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Device for automatic supply of disinfectant Liquid to Wastewater Tanks and the like.
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DK8990C
(en)
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Waterworks with uninterrupted supply of the chemicals used for water purification.
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CH35391A
(en)
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Gully with extension pipe
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CH33247A
(en)
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Water purifier
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DK6417C
(en)
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Flushing device for water closets and the like.
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AT36430B
(en)
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Device for the automatic supply of disinfecting liquid in cisterns or the like.
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DK7741C
(en)
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Procedure for the manufacture of pipes, plates and the like, consisting mainly of slate or slate waste.
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DK9170C
(en)
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Procedure with associated Water Purification Apparatus.
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CH46942A
(en)
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Gully with sludge bucket and overflow pipe
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CH31204A
(en)
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Water purifier
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CH31339A
(en)
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Water purifier
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CH31340A
(en)
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Water purifier
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FR355721A
(en)
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Annular water tank
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CH35192A
(en)
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Water closet
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CA97866A
(en)
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Waste water cock
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DK7190C
(en)
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Device for Water Purifiers.
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FR358727A
(en)
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Water filtration device
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ES34944A1
(en)
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Improvements introduced in the purification procedure for drinking water and other waters.
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CH32877A
(en)
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Basin
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FR6655E
(en)
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Sludge trap-trap
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FR360415A
(en)
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Sludge trap-trap
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CH45747A
(en)
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Stone drain with siphon and device for cleaning the latter
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