CH138371A
(en )
1930-02-28
Object made of steel or cast iron resistant to attack by corrosive agents and process for the manufacture of this object.
FR755817A
(en )
1933-11-30
Process for reducing the tendency to rust of cast iron or steel
AT125662B
(en )
1931-11-25
Process for the production of copper-containing steel or cast iron.
FR661766A
(en )
1929-07-30
Direct penetrating chromium plating process for iron, steel and cast iron, known as the <<autochrome>> process
FR677608A
(en )
1930-03-12
Improvements to wrought or wrought iron production processes
FR638913A
(en )
1928-06-07
Surface hardening process of steel
FR619379A
(en )
1927-03-31
Steel purification method
SU20276A1
(en )
1931-04-30
The method of subsequent processing after casting of two or multi-layered steel
AT126926B
(en )
1932-02-25
Method of manufacturing metal pipes.
FR645449A
(en )
1928-10-25
Removable steel body
CH131625A
(en )
1929-02-28
Process for the production of cast iron.
FR700394A
(en )
1931-02-27
Process to quickly obtain resistance against corrosive water, as well as the hardening of artificial conglomerates
FR612935A
(en )
1926-11-04
Process for protecting iron and steel articles from corrosion
ES111049A1
(en )
1929-06-16
Objects made of steel or cast iron, unassailable by corrosive agents and procedure for the manufacture of said objects.
FR677607A
(en )
1930-03-12
Improvements to wrought or wrought iron production processes
FR677610A
(en )
1930-03-12
Improvements to wrought or wrought iron production processes
FR671416A
(en )
1929-12-12
Process for hardening copper-containing steels used in construction
FR665005A
(en )
1929-09-13
Process for hastening the hardening of hydraulic binders
CH138522A
(en )
1930-02-28
Process for deoxidizing iron or steel.
FR665821A
(en )
1929-09-24
Use of cast iron reinforced by steel reinforcements
CA236612A
(en )
1923-12-25
Iron or steel hardening composition
FR676474A
(en )
1930-02-24
Heat treatment of hardened steel
ES112439A1
(en )
1929-07-01
Procedure for the manufacture of objects of cast iron or steel unassailable by corrosive agents.
GR1599B
(en )
1927-09-05
METHOD FOR PAINTING (HARDENING) OF STEEL.
AT112331B
(en )
1929-02-25
Process for the conversion of copper-aluminum cast alloys.