FR354358A
(en )
1905-10-04
Device for water purification
FR376326A
(en )
1907-08-06
Device for water purification
FR362993A
(en )
1906-07-18
Device for water purification
FR409570A
(en )
1910-04-26
Advanced device for sterilizing water by ozonization
FR358727A
(en )
1906-03-05
Water filtration device
FR352489A
(en )
1905-08-11
Safety device for water levels
FR331668A
(en )
1903-09-25
Apparatus for water sterilization
FR3532E
(en )
1904-12-03
Apparatus for water sterilization
FR350271A
(en )
1905-12-18
Water sterilizer
FR359128A
(en )
1906-03-16
Device for purifying water or other liquids
FR6935E
(en )
1907-04-05
Water lifting device
FR341784A
(en )
1904-08-19
Device for sounding the depth of water
FR357907A
(en )
1906-01-20
Water filter device
FR355797A
(en )
1905-11-11
Water lifting device
FR350104A
(en )
1905-10-13
Automatic water sterilizer
FR7643E
(en )
1907-09-17
Water lifting device
FR366728A
(en )
1906-10-11
Method and saturation apparatus for sterilizing water with ozone
FR342295A
(en )
1904-09-03
Apparatus for the production of ozone
FR379362A
(en )
1907-11-06
Apparatus for heating or boiling water
CH60791A
(en )
1913-08-16
Apparatus for industrial water sterilization
FR397669A
(en )
1909-05-14
Method and apparatus for water purification
FR358105A
(en )
1906-01-29
Method and apparatus for the purification and sterilization of drinking water
FR356157A
(en )
1905-11-22
Under-sidewalk water intake device
FR406066A
(en )
1910-01-21
Device for evacuating condensation water
FR374152A
(en )
1907-06-06
Method and apparatus for instant sterilization of potable water by ozone