CH75678A
(en )
1917-09-01
Process and furnace for the refining of volatile metals
FR477528A
(en )
1915-10-26
Method and apparatus for the continuous casting of molten parts
FR493939A
(en )
1919-08-26
Metal separation and refining process
FR490066A
(en )
1919-04-01
Process for the manufacture of coke for metallurgical and other applications
FR503905A
(en )
1920-06-21
Melting process and furnace for melting metals
CH82006A
(en )
1919-08-16
Process and furnace for the calcination of carbonates
FR701125A
(en )
1931-03-12
Process and furnace for the remelting and purification of crude metals
FR488645A
(en )
1918-10-23
Process for the treatment of ores
FR481230A
(en )
1916-11-14
Refractory lining for furnaces
FR482527A
(en )
1917-03-27
Process for refining volatile metals
FR504068A
(en )
1920-06-24
Method and apparatus for the treatment of sludge
FR510501A
(en )
1920-12-06
Method and furnace for heating metal blocks by means of traveling fires
FR509099A
(en )
1920-10-30
Process for the purification and refining of petroleum distillates
CH78236A
(en )
1918-12-16
Process for the treatment of peat
FR486554A
(en )
1918-04-18
Process for the smelting of any divided metals in any furnaces
FR513311A
(en )
1921-02-12
Process and installation for the preparation of bleaching carbon
FR519964A
(en )
1921-06-18
Process and oven for the chlorinating roasting of roasted pyrites
FR515475A
(en )
1921-04-02
Process for refining liquids
FR540004A
(en )
1922-07-04
Briquette and process for making it
FR489108A
(en )
1918-12-20
Process and installation for the manufacture of briquettes
FR487241A
(en )
1918-06-18
Process and installation for the treatment of oils
CH82012A
(en )
1919-08-16
Process and furnace for the carbonization of wood
FR433695A
(en )
1912-01-13
Advanced process for the manufacture of metallurgical coke
FR488958A
(en )
1918-12-03
Process for the treatment of copper waste
FR518096A
(en )
1921-05-19
Process for the manufacture of asbestos plates and similar products