AT57724B
(en )
1913-02-25
Procedure for cleaning filters with granular filter material.
CH53771A
(en )
1912-04-01
Filters with multiple filter layers
CH54141A
(en )
1912-05-01
Filtration apparatus with float filters
AT68040B
(en )
1915-02-25
Filters for clarifying contaminated water.
CH65639A
(en )
1914-07-01
Process for making sacks
AT59150B
(en )
1913-05-10
Filters with upright filter elements.
CH68486A
(en )
1915-04-01
Process for the extraction of dry material from liquids
AT75538B
(en )
1919-02-25
Process for cleaning liquids.
CH55877A
(en )
1912-09-16
Process for the separation of substances in suspension
CH57543A
(en )
1913-01-16
Process for the preparation of b-b-dianthraquinonyl sulfide
FR443374A
(en )
1912-09-23
Improvements in filters
CH53578A
(en )
1912-03-01
Device for emptying mash filters
AT57738B
(en )
1913-02-25
Process for the destruction of plant pests.
AT80122B
(en )
1920-02-25
Process for concentrating liquids. Process for concentrating liquids.
CH52690A
(en )
1911-12-16
Process for the manufacture of abrasive cloths
CH55033A
(en )
1912-07-16
Device for filtering liquids
CH60910A
(en )
1913-08-16
Device for filtering liquids
CH66325A
(en )
1914-09-01
Process for the preparation of benzyl acetate from benzyl chloride
AT89292B
(en )
1922-08-25
Process for the destruction of insect pests.
CH66129A
(en )
1914-08-17
Process for cleaning Twitchell reactive
CH65736A
(en )
1914-07-01
Process for the preparation of acetperacid from acetaldehyde
CH57962A
(en )
1913-02-01
Process for the preparation of chromium formate
CH55550A
(en )
1912-08-16
Process for the preparation of anthranol
CH58670A
(en )
1913-03-17
Process for the representation of erythrene
CH54324A
(en )
1912-05-17
Process for the representation of erythrene