CH2022A
(en )
1890-07-15
Apparatus for filtering liquids, known as Capillery Filter
FR328123A
(en )
1903-12-30
Apparatus for filtering liquids called "easy filter"
CH1962A
(en )
1890-06-14
Continuous or alternating action filter
CH88E
(en )
1891-08-15
Continuous or alternating action filter
CH2799A
(en )
1891-05-30
Bag filter
CH4282A
(en )
1892-03-31
New filter
CH5000A
(en )
1892-09-30
Filter system for all liquids
CH3732A
(en )
1891-12-15
filter
ES10448A1
(en )
1890-03-01
A device for filtering liquids called a "Capillery Filter".
CH4147A
(en )
1892-02-15
Air purifying filter
CH4175A
(en )
1892-03-15
Filtration device
ES10700A1
(en )
1890-06-01
A new immersion filter for the filtration of liquids.
FR318999A
(en )
1902-10-31
A sterilizing filter system
FR323698A
(en )
1903-03-12
A device for filtering wines, called "the winegrower's practical filter"
CH37494A
(en )
1907-06-15
Apparatus for filtering liquids
CH26036A
(en )
1903-07-15
Oil filtering device
FR418156A
(en )
1910-12-02
Continuously operating apparatus for removing liquids from solids
FR375098A
(en )
1907-06-29
Method and apparatus for filtering liquids
FR342049A
(en )
1904-08-25
Fabric filter for liquids
FR410722A
(en )
1910-05-27
Apparatus for sterilizing liquids by ultra-violet rays or others
ES10887A1
(en )
1890-08-01
Filter improvements.
CH1606A
(en )
1890-02-28
Pressure mixer filter says, The sleeper
FR6347E
(en )
1906-10-23
Device with filter or without filter for liquid flow
CH3000A
(en )
1891-05-30
Apparatus for sterilizing filter media
CH16120A
(en )
1898-09-30
Filtration apparatus