CH70285A
(en )
1915-11-16
Process for the production of artificial rubber
CH61931A
(en )
1913-10-16
Process for the production of technically usable rubber substitute
CH77246A
(en )
1918-03-16
Process for the electrolytic production of persons
CH73443A
(en )
1917-03-16
Process for the production of artificial slates
CH67258A
(en )
1914-11-16
Process for the production of artificial sponge
CH56606A
(en )
1912-11-16
Process for the preparation of artificial rubber
CH58143A
(en )
1913-02-17
Process for the preparation of artificial rubber
CH68831A
(en )
1915-04-16
Process for the production of borofluorotassium
CH68920A
(en )
1915-05-01
Process for the production of artificial leather
CH76038A
(en )
1917-10-16
Process for the production of sodium amide
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
CH68153A
(en )
1915-02-16
Process for the production of fuel
CH57227A
(en )
1912-12-16
Process for the production of artificial stones
CH72628A
(en )
1916-06-16
Process for the production of antimonies
CH58857A
(en )
1913-04-01
Process for the production of artificial stones
CH59610A
(en )
1913-06-02
Process for the production of artificial stones
CH61357A
(en )
1913-09-16
Process for the production of artificial stones
CH71810A
(en )
1916-02-16
Process for the production of artificial leather
CH73105A
(en )
1916-08-16
Process for the production of leather substitutes
CH51291A
(en )
1911-08-16
Process for the preparation of artificial rubber
CH55851A
(en )
1912-09-16
Process for the preparation of artificial rubber
CH56495A
(en )
1912-11-01
Process for the preparation of artificial rubber
CH56496A
(en )
1912-11-01
Process for the preparation of artificial rubber