FR519528A
(en )
1921-06-11
Process for the production of economical soaps
CH81877A
(en )
1919-04-01
Manufacturing process for molded cement articles
FR491997A
(en )
1919-06-24
Advanced resin manufacturing process
FR499314A
(en )
1920-02-07
Art cement and its manufacturing process
FR487110A
(en )
1918-06-05
Manufacturing process of a slag cement
FR495578A
(en )
1919-10-11
Process for the manufacture of superphosphates
FR518598A
(en )
1921-05-27
Manufacturing process for hollowed-out trees
FR535276A
(en )
1922-04-12
Manufacturing process for glassware
FR506283A
(en )
1920-08-18
Silica brick manufacturing process
FR494393A
(en )
1919-09-06
Chain-gimp manufacturing process
FR520404A
(en )
1921-06-25
Manufacturing process of a mass for plasters
CH80315A
(en )
1919-07-01
Manufacturing process for reinforced cement ships
FR469694A
(en )
1914-08-06
Process for the manufacture of artificial mother-of-pearl
FR506281A
(en )
1920-08-18
Continuous manufacturing process for acetone
FR491304A
(en )
1919-05-30
Process for the use of waste from the manufacture of celluloid articles
FR481870A
(en )
1917-01-24
Manufacturing process for molded objects
FR493574A
(en )
1919-08-13
Synthetic manufacturing process for ammonia
FR513671A
(en )
1921-02-21
Process for the production of ferro-tungsten
FR503683A
(en )
1920-06-16
Synthetic manufacturing process for ammonia
FR491127A
(en )
1919-05-22
Molding machines and molds for the manufacture of cement and concrete pipes
FR493575A
(en )
1919-08-13
Improved synthetic manufacturing process for ammonia
FR488822A
(en )
1918-11-19
Ammonia manufacturing process
FR488821A
(en )
1918-11-19
Ammonia manufacturing process
FR507259A
(en )
1920-09-09
Manufacturing process for porous materials
FR493302A
(en )
1919-08-06
Lime superphosphate manufacturing process