FR521891A
(en )
1921-07-21
Process for the preparation of pyridic bases
CH76769A
(en )
1918-02-16
Construction process of economical houses
FR540585A
(en )
1922-07-13
Hydrocarbon treatment process
FR513143A
(en )
1921-02-08
Manufacturing process of hinges
FR489879A
(en )
1919-03-19
Process for the purification of natural graphites
FI6701A
(en )
1917-07-05
Process for the preparation of p-nitrolole sulphic acid
FR487733A
(en )
1918-07-23
New ventilation process
FR508167A
(en )
1920-10-04
Process for the production of combustible steam
FR488359A
(en )
1918-09-17
Enfleurage process
FR493672A
(en )
1919-08-19
Process for disinfection of any premises
FR485768A
(en )
1918-02-06
Brick firing process
FR523808A
(en )
1921-08-25
Process for dehydration of metal chlorides
FR518825A
(en )
1921-05-31
Manufacturing process of artificial trass
FR517209A
(en )
1921-05-02
Process for the production of trisazo dyes
CH75963A
(en )
1919-08-01
Process for the production of waterproof shoes
FR484368A
(en )
1917-10-02
Manufacturing process of colored sheets
FR519503A
(en )
1921-06-11
Process for the construction of small houses
FR524751A
(en )
1921-09-10
Process for the manufacture of cartridge cases
FR533176A
(en )
1922-02-23
Process for the manufacture of cokemetallurgical
FR519557A
(en )
1921-06-11
Process for the construction of hollow partitions
FR490739A
(en )
1919-05-06
Industrial lacquering process
CH79939A
(en )
1919-01-16
Process for the production of fibers
FR485094A
(en )
1917-12-11
Hop drying process
FR525180A
(en )
1921-09-16
Process for the production of coiled cartridge cases
FR514956A
(en )
1921-03-22
Process for the production of caramel