FR11057E
(en )
1909-12-04
Apparatus for the solubilization and nitrification of faeces and waste water
CH47959A
(en )
1910-08-16
Apparatus for the solubilization and nitrification of faeces and waste water
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
CH50963A
(en )
1911-07-17
Installation for sewage treatment
FR3211E
(en )
1904-09-30
Apparatus for the reception and destruction of faeces
CH41912A
(en )
1908-12-01
Sewage treatment apparatus
FR344192A
(en )
1904-10-26
Apparatus for treating sewage
CH58928A
(en )
1913-07-01
Waste water purification device
FR13647E
(en )
1911-05-19
Purification device for all waste water
FR17710E
(en )
1913-11-13
Purification device for all waste water
FR468763A
(en )
1914-07-16
Device for the purification of waste water
FR403040A
(en )
1909-10-23
Apparatus for the destruction and use of waste meat and animal bodies
FR422442A
(en )
1911-03-21
Device for scraping and cleaning water pipes, pipes, etc.
FR365253A
(en )
1906-09-05
Advanced solid deodorizer or disinfectant and apparatus for its use
FR380070A
(en )
1907-11-28
Device for the bacterial treatment of faeces, gray water and black water
FR418207A
(en )
1910-12-03
Apparatus for purifying sewage matter Apparatus for purifying sewage and sewage and sewage
FR383259A
(en )
1908-03-02
Sanitary apparatus for the deposit and treatment of faeces
FR394277A
(en )
1909-01-19
Method and apparatus for the treatment of sewage
FR401173A
(en )
1909-08-20
Apparatus for fumigation and disinfection of ships, buildings and sewers
FR5904E
(en )
1906-07-27
Sewage treatment device
FR432003A
(en )
1911-11-25
Method and apparatus for purifying water and sewage
FR346679A
(en )
1905-02-03
Apparatus for the biological purification of water and especially black water
FR396606A
(en )
1909-04-16
Apparatus for purifying faecal water