CH79431A
(en )
1918-11-16
Sewage treatment plant for the process water of hydropower plants or other liquids containing sink matter
CH349551A
(en )
1960-10-15
Plant for the treatment of liquids, e.g. for softening water
CH79432A
(en )
1918-11-16
Sewage treatment plant for the process water of hydropower plants or other liquids containing sink matter
CH79129A
(en )
1918-10-01
Sewage treatment plant for the process water of hydropower plants and 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
CH82209A
(en )
1919-09-01
Sewage treatment plant for liquids containing sink matter with automatic removal of the separated matter
CH73580A
(en )
1916-10-16
Equipment for the mechanical treatment of waste water in sewage treatment plants
FR833184A
(en )
1938-10-13
Waste water settling tank
ES65533A1
(en )
1917-11-01
Improvements related to the treatment of water, sewage and similar waters.
FR585998A
(en )
1925-03-12
Process for the industrial use of inferior plants
CH61934A
(en )
1913-10-16
Wastewater treatment plant
CH80734A
(en )
1919-08-01
Water turbine plant
CH79651A
(en )
1918-12-16
Facility for the production of calcium carbide
DK24974C
(en )
1919-09-08
Bacterial wastewater treatment plant.
CH75431A
(en )
1917-07-16
Device to prevent the overflow of boiling liquids
FR766455A
(en )
1934-06-28
Industrial application of lead sub-acetate to the treatment of waste water from fruit distilleries
CH81503A
(en )
1919-06-16
water tap
CH62593A
(en )
1913-12-01
Biological sewage treatment plant
FR790965A
(en )
1935-11-30
Plant for the treatment of salt water
CA170749A
(en )
1916-07-11
Purification of water, liquid and sewage
CH392407A
(en )
1965-05-15
Sewage treatment plant for the biological purification of waste water
AT80093B
(en )
1920-02-25
Process for the treatment of lime (lime water process for the treatment of water pre-cleaned with lime (lime water or lime milk) with alkali or lime milk) pre-cleaned water with base-exchanging substances. exchanging substances.
ES59438A1
(en )
1915-02-01
An apparatus to be called "Sneroll Water Lifting Apparatus".
DK26382C
(en )
1920-08-02
Pump for Disposal of Wastewater from Rinsing, Watering, Cooling and Bathing Devices in Submarines.