CH4814A
(en )
1892-08-15
Device for the purification and filtering of industrial and domestic water
FR388306A
(en )
1908-08-08
Apparatus for industrial water purification
FR366991A
(en )
1906-10-17
Device for the filtration and purification of industrial or food water
FR431552A
(en )
1911-11-14
Dirty water purification device
FR428919A
(en )
1911-09-11
Method and apparatus for the purification of water for industrial applications
FR446383A
(en )
1912-12-03
Device intended for the purification and filtration of drinking and industrial water
FR374974A
(en )
1907-06-27
Combined device for industrial wastewater treatment
FR349918A
(en )
1905-07-27
Decanter for industrial water purification
CH4142A
(en )
1892-03-15
Purifier and separator of sewage, domestic and industrial water
FR385222A
(en )
1908-05-05
Device for mechanical purification of waste water and for separate treatment of sludge
CH35507A
(en )
1906-08-31
Apparatus for the destruction of faeces and the purification of waste water
FR426646A
(en )
1911-07-11
Device for the purification of waste water
FR413517A
(en )
1910-08-11
Device for purifying the washing water of coals or ores
FR368868A
(en )
1906-12-19
Method and apparatus for industrial water purification
FR383266A
(en )
1908-03-02
Installation for industrial water purification
FR321408A
(en )
1903-01-09
Water purifier
FR358105A
(en )
1906-01-29
Method and apparatus for the purification and sterilization of drinking water
FR442846A
(en )
1912-09-10
Water purification device
FR358461A
(en )
1906-02-17
Apparatus for the reception and liquefaction of faeces and the purification of waste water
FR411330A
(en )
1910-06-14
Method and apparatus for the purification of water used to supply boilers or for other purposes
FR350327A
(en )
1906-01-12
Clarifier for drinking and industrial water
FR2316E
(en )
1904-03-03
Installation for water purification
FR447168A
(en )
1912-12-26
Sewage treatment device
FR430705A
(en )
1911-10-23
Apparatus for purifying water used to supply boilers or for other purposes
CH58928A
(en )
1913-07-01
Waste water purification device