CH224048A
(en )
1942-10-31
Metal rectifier.
CH225868A
(en )
1943-02-28
Selenium rectifier.
CH258123A
(en )
1948-11-15
Selenium rectifier.
SU55426A1
(en )
1938-11-30
The method of electrolytic cleaning of parts before galvanizing
SU55570A1
(en )
1939-08-31
Adrenaline Purification Method
SU55576A1
(en )
1938-11-30
The method of artificial aging of wines
SU54382A1
(en )
1938-11-30
The method of producing alkyl mercurphosphates
SU55551A1
(en )
1939-08-31
The method of obtaining sulfur dyes
SU55611A1
(en )
1938-11-30
The method of obtaining aromatic oxaldehyde
SU46580A1
(en )
1936-04-30
The method of cleaning solutions of acetic powder from the resin
SU46568A1
(en )
1936-04-30
The method of producing tetra-chlorophthalic acid
CH215396A
(en )
1941-06-30
Bipolar electrolyser.
SU55833A1
(en )
1938-11-30
The method of washing lead acetate from lead white
SU54620A1
(en )
1938-11-30
The method of heat treatment of spiral springs
SU54535A1
(en )
1938-11-30
The method of cleaning technical acetic acid
SU45152A1
(en )
1935-11-30
The way to clean nickel baths from contaminating zinc
SU5367A1
(en )
1928-05-31
The method of preparation of the bath for the electrolytic precipitation of tin
CH206960A
(en )
1939-09-15
Bipolar electrolyser.
SU54814A1
(en )
1938-11-30
The method of obtaining food acetic acid
SU55395A1
(en )
1938-11-30
The method of obtaining likes
SU49071A1
(en )
1936-08-31
Siphon for cleaning liquid metal
SU46261A1
(en )
1936-03-31
Method for producing acetylamino-hydroxyphenylarsinic acid
SU44674A1
(en )
1935-10-31
The cleaning method is matched with omega-polymer
SU45783A1
(en )
1936-01-31
Electrolytic copper deposition method
SU48580A1
(en )
1936-08-31
The method of stabilizing the frequency of the lamp generators