CH273565A
(en )
1951-02-15
Time division multiplex system.
DK75205C
(en )
1952-12-22
Method for purifying water.
DK74968C
(en )
1952-11-10
Method for sterilizing water.
DK72876C
(en )
1951-08-06
Method for removing water from aqueous gels.
DK74845C
(en )
1952-10-13
Procedure for purifying water.
DK77413C
(en )
1954-04-20
Process for the preparation of N-acylamidodiols.
DK74560C
(en )
1952-08-11
Sewage treatment plant.
DK76520C
(en )
1953-10-19
Process for the preparation of N-acylamidodiols.
DK76599C
(en )
1953-11-02
Process for the preparation of phenoxyacetamidines.
DK76602C
(en )
1953-11-02
Process for the preparation of 2-amino-4-oxy-pteridines.
DK80664C
(en )
1956-03-12
Process for the preparation of 1-alkylpiperazine-4-mono-carboxamides.
DK83134C
(en )
1957-07-15
Meat softener.
DK70750C
(en )
1950-03-20
Method for purifying solutions of antibiotics.
DK73149C
(en )
1951-10-01
Method for manufacturing building blocks.
DK69324C
(en )
1949-06-07
Method for reducing the water content of cement raw sludge.
DK77202C
(en )
1954-03-01
Form for simultaneous casting of several, preferably elongated concrete elements.
DK70104C
(en )
1949-10-17
Water pistol.
DK76101C
(en )
1953-07-13
Method for casting concrete walls.
DK78600C
(en )
1954-12-13
Machine for making building blocks.
DK77790C
(en )
1954-07-12
Process for the preparation of derivatives of fentiazine.
DK75083C
(en )
1952-12-08
Installations for mechanical cleaning of vehicles.
DK79774C
(en )
1955-08-29
Process for the preparation of pteridines.
DK83508C
(en )
1957-09-23
Process for the preparation of pteridines.
DK71974C
(en )
1951-01-02
Cover for drinking water wells.
FI24110A
(en )
1950-01-10
Water purification method