CH49600A
(en )
1911-03-01
Method and apparatus for the oxidation of nitrogen using electric arc
FR457696A
(en )
1913-09-23
Method and apparatus for the continuous manufacture of hydrogen peroxide
FR403086A
(en )
1909-10-25
Method and apparatus for obtaining steel ingots
FR415976A
(en )
1910-10-08
Process for the oxidation of nitrogen in the air using electric discharges with flames or sparks
FR383924A
(en )
1908-03-24
Method and apparatus for the sanitation of cities
FR439872A
(en )
1912-06-26
Method and apparatus for the manufacture of nitrogen compounds
FR386171A
(en )
1908-06-05
Method and furnace for producing chemical reactions by means of the electric arc
FR424009A
(en )
1911-05-03
Improved process and apparatus for steel production
CH67428A
(en )
1914-12-16
Electrical apparatus for the production of nitrogen oxide by the electrical oxidation of atmospheric nitrogen
FR395131A
(en )
1909-02-11
Method and apparatus for manufacturing steel
FR482978A
(en )
1917-05-16
Method and apparatus for the direct production of steel
FR385193A
(en )
1908-05-04
Process for the oxidation of atmospheric nitrogen by electrical means
FR403748A
(en )
1909-11-12
Method and apparatus for the electrical production or smelting of iron and steel
FR380800A
(en )
1907-12-17
Electric induction furnace and process for steel metallurgy
FR357781A
(en )
1906-01-13
Method and apparatus for the purification of carbon tetrachloride
FR392020A
(en )
1908-11-16
Method and apparatus for the preparation of autotypes
CH74444A
(en )
1917-07-16
Sulfur dioxide oxidation process and apparatus for its implementation
FR338028A
(en )
1904-05-05
Method and apparatus for the manufacture of induction coils
FR383461A
(en )
1908-03-10
Process and apparatus for the manufacture of steel and the like
FR396161A
(en )
1909-04-03
Apparatus for the production of nitrogen acid
FR368965A
(en )
1906-12-24
Steel rolling apparatus
FR419575A
(en )
1911-01-10
Process and apparatus for the chlorination of copper and other ores
FR362861A
(en )
1906-07-11
Improved method and apparatus for the manufacture of copper electro-types
FR342295A
(en )
1904-09-03
Apparatus for the production of ozone
FR355814A
(en )
1905-11-13
Test apparatus for the discovery of electric sparks