CH66072A
(en )
1914-08-01
Mold for the mass production of alluvial stones
CH65491A
(en )
1914-06-16
Process for the production of hollow stones closed on all sides
CH66966A
(en )
1914-11-02
Process for the production of homogeneous pressed concrete piles
CH68446A
(en )
1915-03-16
Molding box for the production of artificial stones
CH65685A
(en )
1914-07-01
Process for the production of rammed asphalt
CH64428A
(en )
1914-04-01
Pouring stone
CH66062A
(en )
1914-08-01
Hollow stone for the production of hollow body slabs
NL74C
(en )
1913-12-15
Process for the manufacture of imitation marble slabs
CH61648A
(en )
1913-10-01
Mold for making pottery
CH51916A
(en )
1911-10-02
Mass for the production of artificial stone
CH71563A
(en )
1916-01-17
Molding box for the production of artificial stones
CH51068A
(en )
1911-07-17
Process for the production of artificial stone slabs
CH50173A
(en )
1911-05-01
Process for the production of artificial stone slabs
CH72151A
(en )
1916-04-01
Forming machine for the production of hollow stones
FR465909A
(en )
1914-04-30
Sand collector-classifier
CH65872A
(en )
1914-07-16
Process for the production of concrete or reinforced concrete piles
CH63782A
(en )
1914-02-16
Device for the production of artificial building blocks
CH47915A
(en )
1910-08-16
Artificial stone
FR462023A
(en )
1914-01-17
Mold for the manufacture of perforated stone
CH57481A
(en )
1913-01-02
Molding box for the production of sand, cement and cinder blocks
CH59611A
(en )
1913-06-02
Artificial stone
FR414710A
(en )
1910-09-09
Process for the manufacture of paving stones
CH54275A
(en )
1912-05-17
Form for the production of curved ceiling stones
CH64235A
(en )
1914-03-16
Process for the production of nitrogen
CH67705A
(en )
1915-01-02
Process for the production of nitrogen