CH83531A
(en )
1919-12-16
Manufacturing process of pinions for watchmaking
FR533176A
(en )
1922-02-23
Process for the manufacture of cokemetallurgical
FR499035A
(en )
1920-01-29
Manufacturing process of a combustible tablet
FR501910A
(en )
1920-04-29
Process for the manufacture of algin collars and cuffs
FR516629A
(en )
1921-04-23
Process for the manufacture of perborates
FR525579A
(en )
1921-09-24
Process for the manufacture of dinitrophenol
FR535085A
(en )
1922-04-08
Process for the manufacture of lime nitrate
FR520089A
(en )
1921-06-20
Process for the production of explosives
FR511913A
(en )
1921-01-07
Process for the manufacture of strawberries
FR509610A
(en )
1920-11-16
Manufacturing process of diaminoacridine
FR523219A
(en )
1921-08-13
Manufacturing process of alloys of metal alloys
FR535502A
(en )
1922-04-15
Process for the manufacture of twist drills
FR21742E
(en )
1921-01-12
Process for the manufacture of cartons
FR498653A
(en )
1920-01-20
Manufacturing process of barrels
FR511911A
(en )
1921-01-07
Strawberry manufacturing process
FR501496A
(en )
1920-04-15
Process for the manufacture of propylene bi-chloride
FR495293A
(en )
1919-10-03
Ammonium sulfate manufacturing process
FR507596A
(en )
1920-09-18
Process and machine for the production of hollow bricks
FR542904A
(en )
1922-08-24
Process for the production of cements and similar binders
FR510327A
(en )
1920-12-02
Manufacturing process of glass valves
FR23587E
(en )
1921-12-14
Process for the manufacture of methyl chloroformate
FR552158A
(en )
1923-04-25
Manufacturing process of binoculars cases
FR521424A
(en )
1921-07-13
Manufacturing process of alkali chromates
FR557310A
(en )
1923-08-07
Process for the manufacture of metal tubes
FR526025A
(en )
1921-09-30
Artificial marble manufacturing process