NL673C
(en )
1915-06-15
Apparatus for the production of molded bricks
NL1201C
(en )
1916-04-01
Method for evaporating liquids
NL387C
(en )
1914-10-15
Machine for the production of artificial slate
NL358C
(en )
1914-10-01
Process for preparing erythrene
NL74C
(en )
1913-12-15
Process for the manufacture of imitation marble slabs
NL1674C
(en )
1917-05-01
Method for making soap
NL4550C
(en )
1920-01-15
METHOD FOR PREPARING PIGMENTS
NL610C
(en )
1915-04-01
Process for preparing electrolytes for electroplating purposes
NL558C
(en )
1915-03-01
Method for obtaining a raw material for the manufacture of viscose from finely divided wood
NL709C
(en )
1915-06-15
Process for preparing white enamel
NL769C
(en )
1915-09-15
Method for the mechanical production of paper folding trays
NL2371C
(en )
1918-03-15
Apparatus for coagulating latex
NL245C
(en )
1914-06-15
Method for the synthetic preparation of tannins
FR444260A
(en )
1912-10-14
Kind of brick
NL343C
(en )
1914-10-01
Process for preparing solid fumigants
NL492C
(en )
1915-01-15
Process for the preparation of white lead
NL1179C
(en )
1916-03-15
Method for preparing mercury preparation
NL874C
(en )
1916-12-15
Apparatus for mechanical reworking of the soil
NL831C
(en )
1915-09-15
Process for the mechanical purification of sugarcane juice
NL349C
(en )
1914-10-01
Improvement of a process for preparing white lead
NL604C
(en )
1916-12-01
Method of manufacturing artificial stone
NL1547C
(en )
1916-10-02
Method for manufacturing heating bodies for central heating or the like
NL1761C
(en )
1917-01-15
Press for the production of bricks and the like
CH58588A
(en )
1913-03-17
brick
CH54612A
(en )
1912-10-01
brick