FR856912A
(en )
1940-08-16
Polishing process for steel and stainless iron
FR851838A
(en )
1940-01-16
Roller rail for industrial heat treatment furnaces
FR868727A
(en )
1942-01-14
Process for the reduction of iron losses in cupolas and furnaces intended for its application
FR845119A
(en )
1939-08-11
Process for the surface treatment of iron and steel
FR868862A
(en )
1942-01-19
Process for adjusting the course of preliminary operations in shaft furnaces and more particularly in blast furnaces
FR848340A
(en )
1939-10-26
Process for improving the heat treatment of metals and in particular ferrous metals
FR873948A
(en )
1942-07-23
Process for the manufacture of Thomas and Bessemer steels
FR871785A
(en )
1942-05-09
Process for carrying out additional reactions in shaft furnaces, in particular in blast furnaces
FR853981A
(en )
1940-04-02
Process and installation of heat treatment of metallurgical parts
FR851839A
(en )
1940-01-16
Roller rail for heat treatment furnaces
FR871017A
(en )
1942-04-03
Process for the production of oxide layers intended to protect iron and steel
FR837843A
(en )
1939-02-21
Method and device for cleaning the smelting channels of induction furnaces for light metals
FR839241A
(en )
1939-03-29
Process for introducing lead into steel
FR731328A
(en )
1932-09-01
Process and furnaces for the heat treatment of metals
FR867021A
(en )
1941-09-23
Process and installation for the electro-steel treatment of magnetizable iron ores
FR830704A
(en )
1938-08-08
Differential hardening process for thin plates and furnaces for the application of this process
FR855808A
(en )
1940-05-21
Manufacturing process of iron and steel alloys
FR51880E
(en )
1943-05-24
Process for the manufacture of Thomas and Bessemer steels
FR807429A
(en )
1937-01-12
Process for surface hardening of metal parts and equipment specific to the execution of this process
FR851782A
(en )
1940-01-15
Improvements to the heat treatment process and to the furnaces to allow these processes to be applied
FR876742A
(en )
1942-11-16
Improvements in the construction of cupola furnaces
FR844970A
(en )
1939-08-07
Improvements in the construction of walls for glass melting furnaces
FR870920A
(en )
1942-03-30
Process for obtaining an addition of lime for the metallurgical treatment of iron ores in the blast furnace
FR932558A
(en )
1948-03-25
Advanced steelmaking process
FR832192A
(en )
1938-09-22
Advanced steelmaking process