CH58727A
(en )
1913-04-01
New process for the case-hardening of objects made of iron or steel or formed from steel alloys
FR434443A
(en )
1912-02-02
New process for the case-hardening of objects made of iron or steel or formed from steel alloys
FR481705A
(en )
1917-01-09
Electrolytic process for removing oxide or rust from the surface of iron or steel objects
FR415985A
(en )
1910-10-08
Process for carburizing articles of iron and steel, or steel alloys
CH75570A
(en )
1917-09-01
Manufacturing process of an improved product for the cementation of iron and steel objects
FR479370A
(en )
1916-03-17
Process for the surface oxidation of articles of iron, steel and the like
FR464717A
(en )
1914-03-28
Process for the manufacture of a metal combining the properties of iron and steel
FR414108A
(en )
1910-08-26
Process for improving metal alloys
FR458707A
(en )
1913-10-17
Process for forming metallic coatings on iron, steel or other metals
FR481394A
(en )
1916-11-28
Process for the direct production of refined iron and refined steel from titanium-bearing iron ores
FR449212A
(en )
1913-02-20
Method and apparatus for the production of iron and steel
FR532610A
(en )
1922-02-08
Process for the manufacture of heavy metal azides suitable for being charged, and products resulting from this process
FR10736E
(en )
1909-09-10
Process for the direct manufacture of steel with ore
FR421723A
(en )
1911-03-03
Process for the production of metal alloys
FR429518A
(en )
1911-09-25
Process for hardening iron and steel objects
FR461459A
(en )
1913-12-30
Advanced steel refining process
FR411603A
(en )
1910-06-21
Improvements to products for the case-hardening of steel
FR401648A
(en )
1909-09-06
Process for the production of common articles of the metal industry using high percentage magnesium alloys
CH44253A
(en )
1909-07-16
Process for the case-hardening of iron, mild steel and cast or cast steel
FR436145A
(en )
1912-03-19
Process for preparing waste wood of all kinds for the cementation of iron and steel
FR431846A
(en )
1911-11-21
Process for hardening cast steel parts
FR394667A
(en )
1909-01-29
Process for the treatment of iron and steel
FR381091A
(en )
1907-12-27
Process for the production of steel alloys
FR435854A
(en )
1912-03-12
High pressure process and furnace for the direct production of iron and steel
FR401105A
(en )
1909-08-19
Process for the steeling of iron, mild steel, cast iron and cast steel