CH53903A
(en )
1912-04-01
Overflow flap weir that regulates the upper water level automatically
CH47633A
(en )
1910-07-16
Folding weir that regulates the upper water level automatically
CH44944A
(en )
1909-10-01
Flap weir that regulates the upper water level automatically
CH47505A
(en )
1910-07-01
Flap weir that regulates the upper water level automatically
CH47618A
(en )
1910-07-16
Flap weir that regulates the upper water level automatically
FR430623A
(en )
1911-10-20
Automatic water level regulator
FR412634A
(en )
1910-07-18
Water purifier
FR436764A
(en )
1912-04-04
Septic tank with purifier
FR11575E
(en )
1910-03-19
Integral scrubber or aseptic tank
FR418931A
(en )
1910-12-22
Automatic water purifier
FR466548A
(en )
1914-05-15
Water level indicator
FR409760A
(en )
1910-04-30
Water level regulator
FR420523A
(en )
1911-02-01
Water elevator
FR478356A
(en )
1915-12-08
Automatic water elevator
ES47673A1
(en )
1910-05-01
Automatic water distribution regulator.
CH50468A
(en )
1911-06-01
Device for the discharge of river debris from water reservoirs
FR413778A
(en )
1910-08-18
Advanced water meter
CH55100A
(en )
1912-07-16
Tank level
CH42839A
(en )
1909-03-01
Water trap for the automatic regulation of the upper water level in canals
FR456915A
(en )
1913-09-08
Platform for water closets
DK14283C
(en )
1911-02-27
Water level glass.
DK12978C
(en )
1910-02-21
Device for water risers with self-acting Draining of the Water.
FR468178A
(en )
1914-06-30
Bucket for water elevator with pneumatic stopper
CH57471A
(en )
1913-01-02
Automatic lock weir
FR445897A
(en )
1912-11-21
Valve-gate weir that automatically regulates the water level of the forebay