CH63782A
(en )
1914-02-16
Device for the production of artificial building blocks
CH54275A
(en )
1912-05-17
Form for the production of curved ceiling stones
CH64415A
(en )
1914-04-01
Formwork device for the production of concrete structures
CH68446A
(en )
1915-03-16
Molding box for the production of artificial stones
CH66966A
(en )
1914-11-02
Process for the production of homogeneous pressed concrete piles
CH65491A
(en )
1914-06-16
Process for the production of hollow stones closed on all sides
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
CH73661A
(en )
1916-11-01
Device for the production of concrete steps
CH52365A
(en )
1911-11-16
Building block for the production of hollow masonry
AT70872B
(en )
1916-01-10
Process for the production of artificial marble.
CH71563A
(en )
1916-01-17
Molding box for the production of artificial stones
CH55865A
(en )
1912-09-16
Process for the production of rollable plaster bases
CH59100A
(en )
1913-04-16
Device for the production of artificial stones
CH67258A
(en )
1914-11-16
Process for the production of artificial sponge
CH66062A
(en )
1914-08-01
Hollow stone for the production of hollow body slabs
CH61648A
(en )
1913-10-01
Mold for making pottery
CH55868A
(en )
1912-09-16
Element for the production of walls
CH55494A
(en )
1912-09-02
Hollow bodies for the production of ceilings
CH66967A
(en )
1914-11-02
Process for the production of artificial marble
CH71427A
(en )
1916-08-01
Device for making plaster ceilings
DK17177C
(en )
1913-04-07
Procedure for the production of artificial stone.
CH56286A
(en )
1912-10-16
Hollow stone for the production of well-ventilated masonry
CH57481A
(en )
1913-01-02
Molding box for the production of sand, cement and cinder blocks
CH74302A
(en )
1917-02-01
Artificial building block