CH73443A
(en )
1917-03-16
Process for the production of artificial slates
CH58351A
(en )
1913-03-01
Process for the production of artificial building blocks
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
CH57227A
(en )
1912-12-16
Process for the production of artificial stones
CH72948A
(en )
1916-08-01
Process for the production of reversible shoes
CH56522A
(en )
1912-11-01
Process for the production of artificial building blocks
AT74183B
(en )
1918-02-25
Process for the production of artificial stone.
CH74200A
(en )
1917-01-16
Process for the production of glazed asbestos-cement boards
AT70872B
(en )
1916-01-10
Process for the production of artificial marble.
CH57919A
(en )
1913-02-17
Process for the production of artificial lithography stones
CH75554A
(en )
1917-08-16
Process for the production of an artificial fertilizer
CH68920A
(en )
1915-05-01
Process for the production of artificial leather
CH78372A
(en )
1918-07-16
Process for the manufacture of stamps
CH66967A
(en )
1914-11-02
Process for the production of artificial marble
CH72628A
(en )
1916-06-16
Process for the production of antimonies
CH70285A
(en )
1915-11-16
Process for the production of artificial rubber
CH59641A
(en )
1913-06-02
Process for the production of artificial threads
CH67258A
(en )
1914-11-16
Process for the production of artificial sponge
CH75450A
(en )
1917-08-01
Process for the production of floor wax
CH66000A
(en )
1914-08-01
Process for the production of incandescent bodies
CH57225A
(en )
1912-12-16
Process for the production of artificial marble from hydraulic mortars
CH55344A
(en )
1912-08-01
Process for the production of artificial threads
CH77246A
(en )
1918-03-16
Process for the electrolytic production of persons