SU31210A1
(en )
1933-07-31
The method of oxidation of iron and steel products
SU23715A1
(en )
1931-10-31
The method of etching iron products
FR692879A
(en )
1930-11-12
Metal rolling improvements
SU15145A1
(en )
1930-04-30
The method of pickling sheet iron
SU17212A1
(en )
1930-09-30
The method of obtaining ferrous sulfate
FR659331A
(en )
1929-06-27
Sheet metal nails of annular, semi-annular, u-section and other similar sections
SU49710A1
(en )
1936-08-31
The method of oxidation of steel and iron vessels
SU20800A1
(en )
1931-05-31
The method of making wooden coils
SU20728A1
(en )
1931-05-31
Induction relay
SU23371A1
(en )
1931-10-31
The method of obtaining caustic soda and soda
SU31285A1
(en )
1933-07-31
The method of obtaining anise aldehyde
SU23501A1
(en )
1931-10-31
The method of obtaining sulfur dyes
SU20821A1
(en )
1931-05-31
Modification of inclinometer described in US Pat. No. 14970
FR616849A
(en )
1927-02-09
Steel burnishing improvements
SU28096A1
(en )
1932-10-31
The method of obtaining leather flour
SU28903A1
(en )
1933-01-31
The method of obtaining hydrocyanic acid
SU29320A1
(en )
1933-02-28
Method for iron aluminization
SU24209A1
(en )
1931-11-30
The method of etching metals
SU22688A1
(en )
1931-09-30
Method of freeing iron, steel or cast iron from mouse impurities
SU14829A1
(en )
1930-03-31
Method for oxidizing iron, steel and cast iron
ES116400A1
(en )
1930-02-01
Procedure for the oxidation of iron ores.
FR31142E
(en )
1926-11-23
Improvements made in the establishment of metal drums and cans
GR3254B
(en )
1931-06-24
METHOD OF SILVERING OF IRON OR STEEL PRODUCTS AND OF THESE PRODUCTS.
FR619379A
(en )
1927-03-31
Steel purification method
ES120863A1
(en )
1931-01-01
Improvements in the production of iron and chlorine compounds.