CH67851A
(en )
1915-01-16
Process for the production of marble-like artificial stone slabs
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
CH71161A
(en )
1915-12-01
Process for the production of portland cement
CH63045A
(en )
1914-01-02
Process for the production of rash-free, color-stable, dark-colored asbestos-cement artificial stone panels
CH65491A
(en )
1914-06-16
Process for the production of hollow stones closed on all sides
CH66967A
(en )
1914-11-02
Process for the production of artificial marble
AT70872B
(en )
1916-01-10
Process for the production of artificial marble.
CH66966A
(en )
1914-11-02
Process for the production of homogeneous pressed concrete piles
CH72355A
(en )
1916-05-01
Process for the production of road surfaces
NL74C
(en )
1913-12-15
Process for the manufacture of imitation marble slabs
CH59610A
(en )
1913-06-02
Process for the production of artificial stones
CH61357A
(en )
1913-09-16
Process for the production of artificial stones
CH58857A
(en )
1913-04-01
Process for the production of artificial stones
CH64660A
(en )
1914-04-16
Process for the production of artificial stones and artificial stone slabs and plant for carrying out the process
AT74183B
(en )
1918-02-25
Process for the production of artificial stone.
CH58351A
(en )
1913-03-01
Process for the production of artificial building blocks
CH67854A
(en )
1915-04-01
Process for the manufacture of concrete piles
CH52149A
(en )
1911-11-01
Process for the production of bodies that imitate wood or stone cuts
CH56522A
(en )
1912-11-01
Process for the production of artificial building blocks
CH65872A
(en )
1914-07-16
Process for the production of concrete or reinforced concrete piles
CH67201A
(en )
1914-11-16
Process for the manufacture of cement asbestos bricks and the like
CH51608A
(en )
1911-09-01
Process for the production of artificial stone
CH73443A
(en )
1917-03-16
Process for the production of artificial slates
CH57227A
(en )
1912-12-16
Process for the production of artificial stones