CH146846A
(en )
1931-05-15
Process for the absorption of nitrogen oxides.
CH143346A
(en )
1930-11-15
Process for separating the individual fibers from vegetable fibers.
AT116362B
(en )
1930-02-25
Process for the desulfurization of structures made of viscose.
CH137438A
(en )
1930-01-15
Process for the production of rayon threads from rayon.
AT112334B
(en )
1929-02-25
Process for desulfurizing viscose silk.
CH138611A
(en )
1930-03-15
Process for reducing the swellability of unswollen celluloses.
AT121405B
(en )
1931-02-25
Process for drying fuels.
AT126982B
(en )
1932-02-25
Process for the production of moisture-impermeable sheets and webs from regenerated cellulose.
CH132219A
(en )
1929-03-31
Process for the preparation of a dinitroarylaminodiarylamine.
FR631298A
(en )
1927-12-17
Construction process
AT116353B
(en )
1930-02-25
Process for refining cellulose material.
CH138496A
(en )
1930-02-28
Process for the preparation of 2- (oxyethyl) -amino-1-oxybenzene.
AT116564B
(en )
1930-02-25
Process for the production of sodium sulphide.
AT109142B
(en )
1928-03-26
Process for the production of slotted panels, especially for knot catchers
CH138318A
(en )
1930-02-28
Process for the preparation of a sulfur dye.
AT116386B
(en )
1930-02-25
Device for bronzing objects.
CH138526A
(en )
1930-02-28
Process for the preparation of p-acetyl-aminophenylstibic acid.
CH131535A
(en )
1929-02-28
Process for impregnating unpaved roads.
SU17148A1
(en )
1930-09-30
The method of enrichment of coal
DK39325C
(en )
1928-10-08
Liquid filter.
DK41896C
(en )
1930-03-24
Filter.
AT121547B
(en )
1931-02-25
Process for the manufacture of rubber articles.
AT108210B
(en )
1927-12-10
Process for the operation of absorption chillers.
FR675921A
(en )
1930-02-17
Bridge brand
FR628862A
(en )
1927-10-31
Filters.