CH77934A
(en )
1918-06-17
Process for the treatment of tanned skin
FR540585A
(en )
1922-07-13
Hydrocarbon treatment process
CH78236A
(en )
1918-12-16
Process for the treatment of peat
FR487869A
(en )
1918-08-02
Process for the production of artificial leather
FR23747E
(en )
1921-12-15
Process for tanning animal skins
FR519113A
(en )
1921-06-04
Process for hardening the surface of patent leather
FR515075A
(en )
1921-03-24
Process for the treatment of ash by fusion
FR532666A
(en )
1922-02-09
Process for the etherification of organic acids
FR469758A
(en )
1914-08-10
Process of confit of the skins
FR444840A
(en )
1912-10-26
Machine for the treatment of hides and skins
FR432787A
(en )
1911-12-15
Process for the treatment of oilseeds
FR483712A
(en )
1917-08-02
Process for the treatment of coarse animal hair used in the manufacture of felt
FR470774A
(en )
1914-09-29
Improved composition and method for the treatment of skins
FR442062A
(en )
1912-08-23
New process for skin treatment
FR515717A
(en )
1921-04-06
Process for the production of artificial tanning materials
FR519789A
(en )
1921-06-15
Process for the production of leather
CH64489A
(en )
1914-04-16
Process for the rapid tanning of hides
CH74230A
(en )
1917-02-01
Process for tanning hides and skins
CH76324A
(en )
1917-12-01
Process for the treatment of milled products
FR468002A
(en )
1914-06-26
Process for the treatment of plastics
FR504185A
(en )
1920-06-26
Process and devices for the appretage, fleshing and depilation of skins
FR515104A
(en )
1921-03-24
Process for drying patent leather
CH75656A
(en )
1917-09-01
Process for making leatherboard
FR527928A
(en )
1921-11-03
Process for preparing tanning materials and their use for tanning animal skins
FR495793A
(en )
1919-10-17
Process and apparatus for the manufacture of cyanamide