CH35507A
(en )
1906-08-31
Apparatus for the destruction of faeces and the purification of waste water
FR359424A
(en )
1906-03-26
Hygienic device for the automatic destruction of faeces and the purification of waste water
FR358461A
(en )
1906-02-17
Apparatus for the reception and liquefaction of faeces and the purification of waste water
FR346679A
(en )
1905-02-03
Apparatus for the biological purification of water and especially black water
FR388306A
(en )
1908-08-08
Apparatus for industrial water purification
FR358105A
(en )
1906-01-29
Method and apparatus for the purification and sterilization of drinking water
FR400981A
(en )
1909-08-13
Apparatus for the solubilization and nitrification of faeces and waste water
FR361332A
(en )
1906-06-15
Process for the purification and sterilization of drinking water and waste water
CH47959A
(en )
1910-08-16
Apparatus for the solubilization and nitrification of faeces and waste water
FR338586A
(en )
1904-05-28
Apparatus and method for the purification and sterilization of drinking and waste water
FR366991A
(en )
1906-10-17
Device for the filtration and purification of industrial or food water
FR360397A
(en )
1906-04-20
Method and apparatus for the introduction of reagents in water purification
FR335979A
(en )
1904-02-22
Process for the purification and sterilization of drinking water and waste water
FR356762A
(en )
1905-12-08
Method and apparatus for purifying water
FR426646A
(en )
1911-07-11
Device for the purification of waste water
FR354358A
(en )
1905-10-04
Device for water purification
FR344192A
(en )
1904-10-26
Apparatus for treating sewage
FR468763A
(en )
1914-07-16
Device for the purification of waste water
FR385222A
(en )
1908-05-05
Device for mechanical purification of waste water and for separate treatment of sludge
CH41912A
(en )
1908-12-01
Sewage treatment apparatus
FR321408A
(en )
1903-01-09
Water purifier
FR410217A
(en )
1910-05-14
Device for the biological purification of wastewater, sewage, sewage and others
FR376769A
(en )
1907-08-20
Biological transformer intended for the purification of waste water containing organic matter
FR376326A
(en )
1907-08-06
Device for water purification
CH33706A
(en )
1906-01-15
Apparatus for osonating water for sterilization