CH72083A
(en )
1916-04-01
Process for roasting zinc blende and other sulfur-containing ores in muffle furnaces
CH69366A
(en )
1915-06-16
Process for smelting metals and furnace for practicing this process
CH57634A
(en )
1913-01-16
Method and furnace for reducing or melting ores by electrical means
CH75169A
(en )
1917-06-16
Process for the treatment of molten material, alloys and the like and a flame furnace for its practice
CH70793A
(en )
1916-03-16
Furnace for melting metals
CH72191A
(en )
1916-05-16
Melting processes for metallurgical purposes and regenerative melting furnaces for practicing the same
FR496373A
(en )
1919-11-05
Sulfur ore roasting furnace
CH78964A
(en )
1918-09-16
Process for smelting smelting materials
AT88397B
(en )
1922-05-10
Method and device for utilizing the sulfur contained in blast furnace slag.
CA166941A
(en )
1916-01-04
Method of roasting sulphur ores
CH75423A
(en )
1917-07-16
Method for charging shaft furnaces for burning sintering material
FR442472A
(en )
1912-09-02
Oven for roasting ores
FR514977A
(en )
1921-03-22
Method of roasting pyrites, ores, etc., in a deck oven
CH81801A
(en )
1919-07-16
Method and machine for bending metal wire into eyelets
CH70239A
(en )
1915-09-01
Method and apparatus for breaking coconuts and the like
AT80059B
(en )
1920-02-25
Method and furnace for annealing metal blocks with method and furnace for annealing metal blocks by means of traveling fire. ttels wandering fire.
FR451163A
(en )
1913-04-12
Oven for roasting ores
FR449186A
(en )
1913-02-19
Oven for roasting ores
FR519964A
(en )
1921-06-18
Process and oven for the chlorinating roasting of roasted pyrites
CH61745A
(en )
1913-10-16
Apparatus for hardening metals in places
CH66552A
(en )
1914-09-16
Method and device for heating and cooling objects
CH77880A
(en )
1918-06-01
Method and apparatus for ventilating haysticks
CH62787A
(en )
1913-12-16
Process and device for the deslagging of furnaces with beams
CH78099A
(en )
1918-06-17
Method and device for the condensation and recovery of volatilized solvents
CH73356A
(en )
1917-01-16
Annealing and melting furnace with a device for heating it with a tar-air mixture