CH67915A
(en )
1915-02-01
Process for softening water
CH66328A
(en )
1914-10-16
Process for liming hides
CH67115A
(en )
1914-11-02
Process for softening water using base-exchanging substances
CH63551A
(en )
1914-02-02
Apparatus for cleaning laundry
AT57817B
(en )
1913-02-25
Process for preparing printing plates.
CH66774A
(en )
1914-10-01
Process for cleaning metals
CH54192A
(en )
1912-05-01
Process for cleaning buildings
AT71586B
(en )
1916-04-25
Process for dewatering perborates.
CH52282A
(en )
1911-11-01
Method of purifying water
CH64477A
(en )
1914-04-01
Process for purifying hydrogen
CH66122A
(en )
1914-11-16
Process for bleaching tobacco cover sheets
CH70732A
(en )
1915-10-16
Process for gasifying sewer sludge
AT75538B
(en )
1919-02-25
Process for cleaning liquids.
CH65715A
(en )
1914-07-16
Device for cleaning laundry
CH60548A
(en )
1913-07-16
Process for processing waste paper
CH68971A
(en )
1915-05-01
Process for impregnating artificial straw
CH52854A
(en )
1912-01-02
Process for briquetting using sulphite waste liquor
CH64248A
(en )
1914-03-16
Method of collecting sheets
AT71280B
(en )
1916-02-25
Process for mechanical digestion of grain.
CH64697A
(en )
1914-04-16
Method for stiffening felt hats
CH67012A
(en )
1914-11-02
Process for decarburizing metals
CH69538A
(en )
1915-07-01
Device for pushing up water
CH66129A
(en )
1914-08-17
Process for cleaning Twitchell reactive
CH59169A
(en )
1913-05-02
Process for tanning rabbit fur
CH63705A
(en )
1914-02-16
Procedure for disinfecting with sulphurous acid