SU10307A1
(en )
1929-06-29
The method of preparation of drying oil
SU23971A1
(en )
1931-11-30
The method of preparation of the surrogate oil.
SU10419A1
(en )
1929-07-31
Disinsection method
SU20743A1
(en )
1931-05-31
The method of preparation of ultramarine
SU20645A1
(en )
1931-05-31
The method of obtaining diazo compounds from paraaminoresorcin
SU19624A1
(en )
1931-03-31
The method of cleaning black wood powder
SU18003A1
(en )
1930-09-30
The method of preparation of aromatic liquid
SU19350A1
(en )
1931-02-28
The method of obtaining aluminum alloy
SU17542A1
(en )
1930-09-30
The method of preparation of lubricating briquettes
SU11381A1
(en )
1929-09-30
The method of impregnation of wood
SU23066A1
(en )
1931-09-30
Blacksmith tongs
SU16365A1
(en )
1930-08-31
Chugunna Opoka
SU11858A1
(en )
1929-09-30
The method of impregnation of wood
SU17259A1
(en )
1930-09-30
Steam-gas boiler
SU15533A1
(en )
1930-05-31
The method of preparation of varnish from wood tar
SU8780A1
(en )
1929-03-30
The method of obtaining ammonium bromide from methyl bromide of iron
SU14443A1
(en )
1930-03-31
Lead Alloy Bearing
SU8521A1
(en )
1929-03-30
Turbine toy
SU16326A1
(en )
1930-08-31
The method of obtaining water-insoluble azo dyes
SU15777A1
(en )
1930-06-30
Method of making permanent magnets
SU23062A1
(en )
1931-09-30
Method of making stamps
SU9775A1
(en )
1929-05-31
Klupp
SU10310A1
(en )
1929-06-29
Method of preparation of linings. files used in notching
SU10341A1
(en )
1929-06-29
Thermos with additional heating
SU20102A1
(en )
1931-04-30
The method of obtaining complex fertilizers