CH57919A
(en )
1913-02-17
Process for the production of artificial lithography stones
CH57227A
(en )
1912-12-16
Process for the production of artificial stones
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
CH73443A
(en )
1917-03-16
Process for the production of artificial slates
CH65491A
(en )
1914-06-16
Process for the production of hollow stones closed on all sides
CH62767A
(en )
1913-12-16
process for the production of a plaster composed of artificial stones
CH58351A
(en )
1913-03-01
Process for the production of artificial building blocks
CH56522A
(en )
1912-11-01
Process for the production of artificial building blocks
CH55503A
(en )
1912-08-16
Process for the production of porous artificial stones
CH57225A
(en )
1912-12-16
Process for the production of artificial marble from hydraulic mortars
CH75554A
(en )
1917-08-16
Process for the production of an artificial fertilizer
CH55344A
(en )
1912-08-01
Process for the production of artificial threads
CH67258A
(en )
1914-11-16
Process for the production of artificial sponge
CH59100A
(en )
1913-04-16
Device for the production of artificial stones
CH56835A
(en )
1912-12-02
Process for the production of artificial tobacco leaves
CH53957A
(en )
1912-04-01
Process for the production of artificial tobacco leaves
AT74183B
(en )
1918-02-25
Process for the production of artificial stone.
CH57546A
(en )
1913-01-16
Process for the production of size
CH50173A
(en )
1911-05-01
Process for the production of artificial stone slabs
CH51068A
(en )
1911-07-17
Process for the production of artificial stone slabs
CH64663A
(en )
1914-04-16
Process for the production of colored patterned artificial stones
CH56308A
(en )
1912-11-01
Process for the production of quartz hollow bodies
CH51608A
(en )
1911-09-01
Process for the production of artificial stone