GR747B
(en )
1924-11-11
PERFECTED METHOD OF INDUSTRIAL MANUFACTURE OF PURE IRON OR STEEL DIRECTLY OXIDIZED OF IRONIZED IRON.
FR583698A
(en )
1925-01-19
Steel alloy
FR518316A
(en )
1921-05-23
Oil oxidation process
FR619379A
(en )
1927-03-31
Steel purification method
SU31210A1
(en )
1933-07-31
The method of oxidation of iron and steel products
SU3553A1
(en )
1924-09-15
The method of hardening transverse saws
FR584411A
(en )
1925-02-06
Apparatus for steel fabrication
FR578340A
(en )
1924-09-23
Method of stapling metal sheets
ES81825A1
(en )
1922-11-01
A procedure for the manufacture of "Martin Siemens" furnace steel.
FR567481A
(en )
1924-03-03
Manufacturing process of metals, alloys, etc.
FR581266A
(en )
1924-11-26
Metal tinning process
AT112331B
(en )
1929-02-25
Process for the conversion of copper-aluminum cast alloys.
FR578339A
(en )
1924-09-23
Process for the manufacture of arsenates of alkaline earth metals
FR571184A
(en )
1924-05-13
Improvements in the manufacture of ingots of metals other than iron
ES87385A1
(en )
1923-12-16
Procedure for the manufacture of a means to deoxidize and clean steel and iron.
GR2666B
(en )
1930-03-11
METHOD FOR THE PRODUCTION OF CONCENTRATED NITRIC ACID BY OXIDATION OF AMMONIA.
FR560890A
(en )
1923-10-12
Improvements in steel production
FR590839A
(en )
1925-06-23
Process for hardening metal surfaces or edges
DK34634C
(en )
1925-06-22
Procedure for the manufacture of alloy steel or iron grades.
FR656306A
(en )
1929-05-06
Process for the deoxidation of oxidized metal surfaces, as well as the oxidation preservation of metal surfaces
FR568306A
(en )
1924-03-22
Paste for hardening steels
GR1882B
(en )
1928-06-18
METHOD FOR THE PRODUCTION OF CONCENTRATED NITRIC ACID BY OXIDATION OF AMMONIA.
ES69684A1
(en )
1919-06-01
Improvements in the manufacture of steel.
GR324B
(en )
1922-08-27
WATER PURIFICATION EXCELLENTLY FOR MAJOR INDUSTRIAL PURPOSES.
FR592159A
(en )
1925-07-28
Exhaust