FR766167A
(en )
1934-06-22
Manufacturing process of cast iron or steel
FR804385A
(en )
1936-10-22
Process for the manufacture of iron and steel with reduced corrosion fatigue
FR842931A
(en )
1939-06-21
Steel for the manufacture of transmission parts and workpieces, wear-resistant
FR728364A
(en )
1932-07-05
Process for the production of corrosion resistant coatings on iron and steel
FR815230A
(en )
1937-07-08
Process for the protection of iron and steel against rust
FR49342E
(en )
1939-02-17
Steel case-hardening process
FR800720A
(en )
1936-07-17
Process for the pretreatment of steel or iron workpieces
FR749246A
(en )
1933-07-20
Improvements in pickling of iron and steel and process for the manufacture of substances intended for this and other uses
FR818235A
(en )
1937-09-21
Improvements in the manufacture of steel by the Thomas process
FR830779A
(en )
1938-08-09
Process for improving the surface of metals and alloys
FR716535A
(en )
1931-12-22
Process for the manufacture and processing of steel and alloys of iron and steel
FR827820A
(en )
1938-05-04
Manufacturing process of iron, steel and ferrous alloys from cast iron
FR802489A
(en )
1936-09-05
Process for the surface protection of iron and steel against corrosion
FR873416A
(en )
1942-07-08
Process for enriching the surface of iron or steel objects with chromium
FR816153A
(en )
1937-08-02
Process for the preparation of iron and steel
FR873724A
(en )
1942-07-17
Process for making articles of iron or steel with corrosion resistant surfaces
FR755107A
(en )
1933-11-17
Iron and steel derusting and pickling process
FR855808A
(en )
1940-05-21
Manufacturing process of iron and steel alloys
FR749381A
(en )
1933-07-22
Aging Resistant Iron and Steel Manufacturing Process
FR773461A
(en )
1934-11-19
Improvements in the case-hardening of iron or steel
FR880958A
(en )
1943-04-12
Process for producing phosphate coatings on iron and steel
FR827174A
(en )
1938-04-20
Process for reducing corrosion of iron or steel and resulting products
FR760960A
(en )
1934-03-07
Improvements in the manufacture of galvanized steel sheets
FR746273A
(en )
1933-05-26
Process for shaping and machining corrosion resistant austenitic steels
FR773554A
(en )
1934-11-21
Process for the production of phosphate-based protective layers on iron or steel