CH52119A
(en )
1911-11-01
Settling basin for clarifying waste water
CH50963A
(en )
1911-07-17
Installation for sewage treatment
CH65742A
(en )
1914-07-16
Device for purifying waste water
CH53393A
(en )
1912-02-16
Method of dewatering sludge
CH67196A
(en )
1914-11-16
Process for clarifying and disinfecting water
CH50918A
(en )
1911-07-17
Box to hold waste for promenades
CH50468A
(en )
1911-06-01
Device for the discharge of river debris from water reservoirs
FR429275A
(en )
1911-09-19
Siphon for sewage
CH55943A
(en )
1912-09-16
Process for clarifying and disinfecting water
FR423388A
(en )
1911-04-14
Process for clarifying water and eliminating germs
CH53179A
(en )
1912-02-01
Installation for sewage treatment
CH73580A
(en )
1916-10-16
Equipment for the mechanical treatment of waste water in sewage treatment plants
FR477203A
(en )
1915-10-06
Rational settling tank for the clarification of wastewater from washhouses, with extractor-compressor of the retained sludge
FR412634A
(en )
1910-07-18
Water purifier
AT68040B
(en )
1915-02-25
Filters for clarifying contaminated water.
FR416789A
(en )
1910-10-28
Basin for surgical operations
CH45916A
(en )
1910-01-03
Apparatus for the clarification and purification of waste water
CH46189A
(en )
1910-02-01
Sieve paddle wheel for mechanical cleaning of wastewater
FR469257A
(en )
1914-07-28
Transformer-purifier for waste matter
FR483551A
(en )
1917-07-20
Purification tank for sewage and wastewater
FR418424A
(en )
1910-12-09
Process for the treatment of waste water
FR400963A
(en )
1909-08-13
Septic purification tank
FR644878A
(en )
1928-10-16
Septic tank for the settling of waste water
CH61696A
(en )
1913-10-16
Apparatus for the electrolysis of water
CH69517A
(en )
1915-07-01
Process for the mechanical drainage of pipe peat using additional bodies