FR519528A
(en )
1921-06-11
Process for the production of economical soaps
CH81151A
(en )
1919-10-16
Process for manufacturing a weld
CH83337A
(en )
1919-04-16
Process for manufacturing a weld
FR517695A
(en )
1921-05-10
Process for the manufacture of a compound fertilizer
FR495578A
(en )
1919-10-11
Process for the manufacture of superphosphates
FR513671A
(en )
1921-02-21
Process for the production of ferro-tungsten
FR502892A
(en )
1920-05-28
Special steel manufacturing process
FR524751A
(en )
1921-09-10
Process for the manufacture of cartridge cases
FR497513A
(en )
1919-12-09
Process for the manufacture of thermal accumulators
FR490498A
(en )
1919-04-24
Manufacturing process for chlorinated hydrocarbons
FR493406A
(en )
1919-08-08
Martin steel manufacturing process
FR506281A
(en )
1920-08-18
Continuous manufacturing process for acetone
FR534479A
(en )
1922-03-27
Automatic machine for the production of lead shot
CH78646A
(en )
1918-08-16
Process for the manufacture of briquettes
FR518553A
(en )
1921-05-27
Process for the manufacture of artificial resins
CH81099A
(en )
1919-05-01
Process for the production of briquettes from strawberries
FR492628A
(en )
1919-07-12
Process for manufacturing a product that can replace linoleum
FR494033A
(en )
1919-08-28
New manganese steel fabrication process
FR494393A
(en )
1919-09-06
Chain-gimp manufacturing process
FR517801A
(en )
1921-05-12
Process for the manufacture of corks
FR498221A
(en )
1920-01-06
Process for the production of steel
FR497467A
(en )
1919-12-06
Process for the manufacture of methyl chloroformate
FR481682A
(en )
1917-01-05
Manufacturing process of lined bearings for bearings
FR507157A
(en )
1920-09-07
Process for the formation of the welds of preserved boxes
FR494226A
(en )
1919-09-03
Manufacturing process for alloys with a high lead content