CH28471A
(en )
1904-04-30
Hand press for the manufacture of artificial façade stones
CH27257A
(en )
1903-12-31
Novel hollow stone for the production of ceilings
CH34720A
(en )
1906-05-31
Device for the production of artificial cement stones
CH30678A
(en )
1905-01-15
Device for the production of shaped stones
ES30954A1
(en )
1903-03-01
Improvements in the manufacture of bricks and artificial stone.
ES32058A1
(en )
1903-08-01
Improvements in the manufacture of artificial stone.
CH29127A
(en )
1904-07-15
Artificial stone slab
CH30422A
(en )
1904-12-15
Forming machine for the production of building blocks
CH39693A
(en )
1908-04-01
Shaped stone for the production of reinforced ceilings
CA85077A
(en )
1904-01-26
Artificial stone
CA85474A
(en )
1904-02-16
Artificial stone
CH29003A
(en )
1904-06-30
Press for the production of perforated stones
CH28472A
(en )
1904-04-30
Plant for the production of plaster
CH28038A
(en )
1904-03-31
Device for the manufacture of concrete pillars
ES31318A3
(en )
1903-05-16
Improvements in molds for the manufacture of bricks and other similar building stones.
CH30160A
(en )
1904-12-31
Machine for the production of hollow artificial stone beams
ES31224A1
(en )
1903-05-16
Improvements in the manufacture of bricks, artificial stones and the like.
ES31110A1
(en )
1903-04-01
Improvement in the manufacture of Portland cement.
CH29535A
(en )
1904-10-15
Artificial stone
FR338557A
(en )
1904-05-28
Hand press for the production of artificial shaped stones
DK3876C
(en )
1901-04-29
Procedure for the production of artificial stone.
DK3824C
(en )
1901-04-01
Procedure for the production of artificial stone.
CH31400A
(en )
1905-03-31
Machine for the production of cement products
DK5733C
(en )
1903-06-15
Procedure for the production of stone and mortar.
FR334705A
(en )
1903-12-30
Artificial cement