AT43571B
(en )
1910-08-10
Process for processing refractory zinc-lead ores.
AT36349B
(en )
1909-02-25
Process for extracting zinc from its oxyder ores
CH37146A
(en )
1907-04-30
Conical hearth for processing ores
AT181608B
(en )
1955-04-12
Process for refining metals
CH44857A
(en )
1909-09-16
Process for the extraction of deoxidized molten metals
AT57735B
(en )
1913-02-25
Floating process for processing sulphidic ores.
CA104854A
(en )
1907-04-23
Ore smelting process
AU817807B
(en )
1907-09-24
Furnace for obtaining zinc from zinc ores
GB190717364A
(en )
1908-07-29
Improved Process for Separating Parts of the Constituents of Ores from the Remainder thereof.
GB190523408A
(en )
1906-09-13
Improved Process for Obtaining Lead and Silver from their Ores.
AT52229B
(en )
1912-02-26
Process for the production of filaments from metals or metalloids.
CA119970A
(en )
1909-06-20
Ore treating process
CA98180A
(en )
1906-03-27
Metal extracting apparatus
GB190510943A
(en )
1906-08-25
Improved Process for Extracting Tin from Ore.
CA106844A
(en )
1907-08-06
Ore roasting process
CA110702A
(en )
1908-03-10
Ore roasting process
AT29751B
(en )
1907-09-10
Process for the extraction of metals based on the Goldschmidt process.
FR384717A
(en )
1908-04-18
Advanced processing of sulphide ores by the precipitation method
CA111971A
(en )
1908-05-19
Smelting process
CA109288A
(en )
1907-12-24
Apparatus for treating ores
AT36339B
(en )
1909-02-25
Process for refining liquids.
CH40955A
(en )
1908-09-16
Device for the magnetic processing of ore
CA104855A
(en )
1907-04-23
Ore smelting apparatus
AU817807A
(en )
1907-09-24
Furnace for obtaining zinc from zinc ores
FR383451A
(en )
1908-03-10
Lead ore desulfurization process