CH59678A
(en )
1913-06-02
Method of treating water
CH55452A
(en )
1912-08-16
Method of making bells
CH57047A
(en )
1912-12-02
Process for the electrolytic treatment of nitric acid
CH61916A
(en )
1913-10-16
Process for the representation of erythrene
CH59680A
(en )
1913-06-02
Process for cleaning water containing sulphate
CH54686A
(en )
1912-06-01
Method for the representation of pinacon
CH55670A
(en )
1912-09-02
Method for the representation of pinacon
CH56841A
(en )
1912-11-16
Method for the representation of pinacon
CH52282A
(en )
1911-11-01
Method of purifying water
CH61925A
(en )
1913-10-16
Process for treating oleic acid with hydrogen
CH63517A
(en )
1914-02-02
Method of draining peat
CH59720A
(en )
1913-06-02
Methods of using water power
CH55943A
(en )
1912-09-16
Process for clarifying and disinfecting water
CH54321A
(en )
1912-05-17
Method of cleaning table salt
CH77545A
(en )
1918-05-01
Method of treating vulcanized fibers
CH58674A
(en )
1913-03-17
Process for the representation of erythrene
CH59152A
(en )
1913-04-16
Process for the representation of erythrene
CH60242A
(en )
1913-07-01
Process for the representation of erythrene
CH58641A
(en )
1913-03-17
Method of making embroidery
CH61392A
(en )
1913-09-16
Method of making embroidery
CH61694A
(en )
1913-10-16
Method of obtaining nicotine
CH60376A
(en )
1913-07-16
Method of superheating steam
CH66514A
(en )
1914-09-16
Method and apparatus for treating water for the purpose of preventing scale formation
AT82234B
(en )
1921-01-10
Process for the treatment of lignocelluloses containing ketones.
CH54324A
(en )
1912-05-17
Process for the representation of erythrene