FR14626E
(en )
1912-01-22
Apparatus for sterilizing water by ultraviolet rays
CH55375A
(en )
1912-08-16
Apparatus for sterilizing water with ozone
FR481877A
(en )
1917-01-24
Method and apparatus for sterilizing water
FR488021A
(en )
1918-08-13
Device for water softening
FR22053E
(en )
1921-05-12
Ozonator for water sterilization
FR447521A
(en )
1913-01-08
Domestic device for water sterilization
FR19670E
(en )
1915-05-05
Ozonator for water sterilization
CH60791A
(en )
1913-08-16
Apparatus for industrial water sterilization
FR442496A
(en )
1912-09-02
Apparatus for raising water
FR404011A
(en )
1909-11-20
Domestic apparatus for sterilizing water by ozone
FR423839A
(en )
1911-04-27
Apparatus for sterilizing water in sanitized air
FR409570A
(en )
1910-04-26
Advanced device for sterilizing water by ozonization
FR463456A
(en )
1914-02-24
Domestic apparatus for sterilizing water by ultra-violet rays
CH59519A
(en )
1913-05-16
Ozone air sterilization apparatus
FR14337E
(en )
1911-11-17
Apparatus for sterilizing water and other liquids
FR476268A
(en )
1915-07-22
Apparatus for the distillation of water
FR454105A
(en )
1913-06-26
Apparatus for sterilizing liquids by the combined action of ozone and ultraviolet rays
FR437783A
(en )
1912-04-30
Sterilizer for water or other liquids by ozone or electrified air
FR426646A
(en )
1911-07-11
Device for the purification of waste water
FR413892A
(en )
1910-08-20
Household appliance for sterilization of water by ozone
FR455968A
(en )
1913-08-13
Device for water purification
FR454104A
(en )
1913-06-26
Ozone sterilization apparatus for liquids
FR436059A
(en )
1912-03-16
Surgical water tank sterilizer
FR424896A
(en )
1911-05-26
Adjustable device for smoke cleaning
FR468763A
(en )
1914-07-16
Device for the purification of waste water