CH56855A
(en )
1912-11-16
Process for the production of artificial leather
CH71810A
(en )
1916-02-16
Process for the production of artificial leather
CH68920A
(en )
1915-05-01
Process for the production of artificial leather
CH65140A
(en )
1914-05-16
Process for the production of leather
CH66042A
(en )
1914-08-01
Process for the production of leather
CH66043A
(en )
1914-08-01
Process for the production of leather
CH66044A
(en )
1914-08-01
Process for the production of leather
CH43322A
(en )
1909-04-16
Process for the production of artificial leather
CH57227A
(en )
1912-12-16
Process for the production of artificial stones
CH68668A
(en )
1915-04-01
Process for the production of artificial sole leather
CH40980A
(en )
1908-09-01
Process for the production of artificial leather
CH55344A
(en )
1912-08-01
Process for the production of artificial threads
CH75980A
(en )
1918-03-16
Process for the production of artificial leather
CH77110A
(en )
1918-08-01
Process for the production of artificial leather
CH77381A
(en )
1918-09-02
Process for the production of artificial leather
CH55389A
(en )
1912-08-16
Process for the production of cartridge cases
CH67258A
(en )
1914-11-16
Process for the production of artificial sponge
CH81317A
(en )
1919-06-02
Process for the production of leather
CH73105A
(en )
1916-08-16
Process for the production of leather substitutes
CH65547A
(en )
1914-06-16
Process for the production of leather fats
AT63556B
(en )
1914-02-25
Process for the production of artificial sponge.
CH57546A
(en )
1913-01-16
Process for the production of size
CH56851A
(en )
1912-12-02
Process for the production of shoe polish
CH55914A
(en )
1912-09-16
Process for the manufacture of feathered fabrics
CH61931A
(en )
1913-10-16
Process for the production of technically usable rubber substitute