CH75554A
(en )
1917-08-16
Process for the production of an artificial fertilizer
CH73443A
(en )
1917-03-16
Process for the production of artificial slates
CH73106A
(en )
1916-10-02
Process for the production of a leather substitute
CH72963A
(en )
1917-01-02
Process for making a fertilizer
CH80665A
(en )
1919-09-01
Process for the production of an artificial stone
CH57919A
(en )
1913-02-17
Process for the production of artificial lithography stones
CH81778A
(en )
1919-07-16
Process for the preparation of a gallocyanine derivative
CH78372A
(en )
1918-07-16
Process for the manufacture of stamps
CH57227A
(en )
1912-12-16
Process for the production of artificial stones
CH75777A
(en )
1918-01-16
Process for the manufacture of a leather substitute
CH77251A
(en )
1918-03-16
Process for the manufacture of a leather substitute
CH68920A
(en )
1915-05-01
Process for the production of artificial leather
CH72948A
(en )
1916-08-01
Process for the production of reversible shoes
CH58857A
(en )
1913-04-01
Process for the production of artificial stones
CH61357A
(en )
1913-09-16
Process for the production of artificial stones
CH59610A
(en )
1913-06-02
Process for the production of artificial stones
CH75544A
(en )
1917-08-16
process for the production of a detergent
CH57292A
(en )
1913-01-02
Process for the production of bodies for sulphurizing
CH72623A
(en )
1916-06-16
Process for the production of a baking aid
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
CH74534A
(en )
1917-08-01
Process for the production of an anti-skid compound
CH55344A
(en )
1912-08-01
Process for the production of artificial threads
CH78282A
(en )
1918-07-01
Process for the production of a tanning agent