FR594704A
(en )
1925-09-17
Metallurgical process for the manufacture of metals or alloys in a rotary kiln
FR583399A
(en )
1925-01-12
Process for the manufacture of confectionery articles
FR647952A
(en )
1928-12-04
Process for the production of metals and alloys
FR623271A
(en )
1927-06-21
Process for the production of metals and alloys
FR588324A
(en )
1925-05-05
Process for the preparation of metal alloys
FR617215A
(en )
1927-02-16
Gold alloy and process for making it
FR629508A
(en )
1927-11-12
Process for the manufacture of martin-siemens steel
FR650380A
(en )
1929-01-08
Process for the deoxidation of molten metals or alloys
FR650883A
(en )
1929-02-12
Process for the simultaneous preparation of metals or alloys and highly refractory materials
FR598140A
(en )
1925-12-07
Process for the production of gold
FR660321A
(en )
1929-07-10
Process for compacting the texture of parts formed by the agglomeration of metallic elements
FR667295A
(en )
1929-10-15
Process for the purification of foundry metals
FR555836A
(en )
1923-07-06
Process for increasing the hardness, strength and the possibility of machining metals and alloys
FR577097A
(en )
1924-08-30
Process for the manufacture of roofing elements
FR721987A
(en )
1932-03-10
Process for the production of metals, metal mixtures, and metal alloys
FR626714A
(en )
1927-09-17
Steel fabrication process in the siemens-martin furnace
FR634728A
(en )
1928-02-24
Process for the production of aluminum
FR596824A
(en )
1925-11-02
Process for the production of gold wool
FR700740A
(en )
1931-03-06
Process for the production of compact metals or alloys from finely divided raw materials
FR656777A
(en )
1929-05-13
Process for the production of metal powders
FR658253A
(en )
1929-06-03
Process for the production and application of complex metal compounds of chromatable coloring materials
FR620175A
(en )
1927-04-16
Process for obtaining lead and zinc from ores and metallurgical products
FR640688A
(en )
1928-07-19
Improvements to steel fabrication processes for drills or hollow drills
FR603049A
(en )
1926-04-07
Process for the direct manufacture of iron and steel alloys, from oxidized ores
FR630630A
(en )
1927-12-06
Process for attacking titaniferous ores