CH51608A
(en )
1911-09-01
Process for the production of artificial stone
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
CH55503A
(en )
1912-08-16
Process for the production of porous artificial stones
CH57227A
(en )
1912-12-16
Process for the production of artificial stones
CH43426A
(en )
1909-05-01
Process for the production of artificial stone
CH56522A
(en )
1912-11-01
Process for the production of artificial building blocks
CH65491A
(en )
1914-06-16
Process for the production of hollow stones closed on all sides
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
CH73468A
(en )
1916-10-02
Process for the production of calcium cyanamide
CH51114A
(en )
1911-08-01
Process for the production of calcium nitrite
CH51916A
(en )
1911-10-02
Mass for the production of artificial stone
CH53335A
(en )
1912-02-01
Process for the production of hydroquinine
CH55315A
(en )
1912-08-01
Process for the production of road surfaces
AT74183B
(en )
1918-02-25
Process for the production of artificial stone.
AT70872B
(en )
1916-01-10
Process for the production of artificial marble.
CH66967A
(en )
1914-11-02
Process for the production of artificial marble
AT41185B
(en )
1910-02-25
Process for the production of artificial marble.
CH67258A
(en )
1914-11-16
Process for the production of artificial sponge
CH55514A
(en )
1912-08-16
Process for the production of vitreous bodies
CH48317A
(en )
1910-10-01
Process for the production of artificial stones interspersed with bubbles
CH57546A
(en )
1913-01-16
Process for the production of size
CH57919A
(en )
1913-02-17
Process for the production of artificial lithography stones