SU17225A1
(en )
1930-09-30
The method of obtaining acetylsalicylic acid
SU20800A1
(en )
1931-05-31
The method of making wooden coils
SU6201A1
(en )
1928-08-31
Hollow Metal Propeller
SU10394A1
(en )
1929-07-31
The method of purification of sulfuric acid salt
SU23396A1
(en )
1931-10-31
The method of obtaining cinnamic acid
SU18003A1
(en )
1930-09-30
The method of preparation of aromatic liquid
SU17224A1
(en )
1930-09-30
Method for preparing mono- and diaryl arsenoxides and mono-di-diaronic acids
SU18082A1
(en )
1930-09-30
Method of snubbing of tubes of ball inclinometers
SU10307A1
(en )
1929-06-29
The method of preparation of drying oil
SU19350A1
(en )
1931-02-28
The method of obtaining aluminum alloy
SU23972A1
(en )
1931-11-30
The method of liberation of camphor from borneol
SU10291A1
(en )
1929-06-29
The method of preparation of piezoelectric plates
SU17212A1
(en )
1930-09-30
The method of obtaining ferrous sulfate
SU21285A1
(en )
1931-07-31
The method of preparation of mastic for rubbing floors
SU15124A1
(en )
1930-04-30
The method of obtaining nitrocellulose varnishes
SU15595A1
(en )
1930-06-30
The method of purification of salicylic acid mercury
SU14397A1
(en )
1930-03-31
Thermocouple
SU23917A1
(en )
1931-10-31
The method of obtaining purple methyl
SU19624A1
(en )
1931-03-31
The method of cleaning black wood powder
SU15777A1
(en )
1930-06-30
Method of making permanent magnets
SU25728A1
(en )
1932-03-31
The method of manufacture of brake pads cars
SU14567A1
(en )
1930-03-31
Bypass spire to planimeter
SU17542A1
(en )
1930-09-30
The method of preparation of lubricating briquettes
FR674376A
(en )
1930-01-28
Lock nuts
FR659409A
(en )
1929-06-28
Confectionery