CH41912A
(en )
1908-12-01
Sewage treatment apparatus
FR388306A
(en )
1908-08-08
Apparatus for industrial water purification
CH33590A
(en )
1906-04-15
Advanced device for the reproduction of writings
FR376326A
(en )
1907-08-06
Device for water purification
FR385017A
(en )
1908-04-29
Sewage dispenser
FR374700A
(en )
1907-06-20
sewage treatment
FR344192A
(en )
1904-10-26
Apparatus for treating sewage
FR380070A
(en )
1907-11-28
Device for the bacterial treatment of faeces, gray water and black water
FR394277A
(en )
1909-01-19
Method and apparatus for the treatment of sewage
FR5904E
(en )
1906-07-27
Sewage treatment device
CH40643A
(en )
1908-08-01
Device for the bacterial treatment of faeces, greywater and black water
FR342295A
(en )
1904-09-03
Apparatus for the production of ozone
FR388127A
(en )
1908-08-03
Device for the amusement of the public
FR9807E
(en )
1909-02-02
Electrolysis apparatus
FR8790E
(en )
1908-06-23
Electrolysis apparatus
FR377249A
(en )
1907-08-31
Electrolysis apparatus
FR379535A
(en )
1907-11-09
Caisson for sewage treatment and the like
FR356659A
(en )
1905-12-06
Apparatus for the distribution of sewage on filter beds
FR387415A
(en )
1908-07-09
Water purification device
FR374974A
(en )
1907-06-27
Combined device for industrial wastewater treatment
FR381096A
(en )
1907-12-27
Device for intubation of the larynx
FR386541A
(en )
1908-06-16
Purifier column for wastewater treatment
FR394086A
(en )
1909-01-14
Apparatus for the application of electromechanical therapy and electrodiagnosis
FR366991A
(en )
1906-10-17
Device for the filtration and purification of industrial or food water
FR351746A
(en )
1905-07-24
Quadruple acting valve for sparkling water device