CH79129A
(en )
1918-10-01
Sewage treatment plant for the process water of hydropower plants and other liquids containing sink matter
CH216171A
(en )
1941-08-15
Process and plant for biological wastewater treatment.
CH349551A
(en )
1960-10-15
Plant for the treatment of liquids, e.g. for softening water
CH79431A
(en )
1918-11-16
Sewage treatment plant for the process water of hydropower plants or other liquids containing sink matter
CH79432A
(en )
1918-11-16
Sewage treatment plant for the process water of hydropower plants or other liquids containing sink matter
FR855849A
(en )
1940-05-21
Process for the purification and deoxygenation of industrial water
CH75317A
(en )
1917-07-16
Sewage treatment plant for process water from hydropower plants
CH73580A
(en )
1916-10-16
Equipment for the mechanical treatment of waste water in sewage treatment plants
GB100465A
(en )
1916-05-25
Improvements in Devices for the Mechanical Purification or Straining of Water and other Liquids.
CA170749A
(en )
1916-07-11
Purification of water, liquid and sewage
CH241662A
(en )
1946-03-31
Method and device for the treatment of organic household waste and sewage sludge by joint anaerobic digestion.
CH81725A
(en )
1919-07-01
Watering lance for the treatment of plants
FR585998A
(en )
1925-03-12
Process for the industrial use of inferior plants
CH61934A
(en )
1913-10-16
Wastewater treatment plant
FR639481A
(en )
1928-06-22
Process with devices for the purification, clarification and purification of all water as well as for the separation of materials in order of density
CH62593A
(en )
1913-12-01
Biological sewage treatment plant
ES52374A1
(en )
1912-05-01
Improvements related to the treatment of raw water.
AT89386B
(en )
1922-09-11
Filtration and sewage treatment plant.
CH72343A
(en )
1916-08-16
Power plant for operating motorized land and water vehicles
FR451167A
(en )
1913-04-12
Improvements to settling ponds for the treatment of sewage and other putrid water
FR410135A
(en )
1910-05-12
Improvements in the treatment of sacchaiferous plants
ES76028A1
(en )
1921-02-01
Apparatus for the purification and sterilization of water and other liquids.
FR493968A
(en )
1919-08-27
Process for the use of organic waste
FR718658A
(en )
1932-01-27
Plant for the treatment of waste water from dairies or other similar applications
ES52683A1
(en )
1912-06-16
Procedure for washing and concentrating small iron ores and treating waste water and sludge from washing iron ores.