CH189401A
(en )
1937-02-28
Plant for carbon dioxide production.
CH223553A
(en )
1942-09-30
Process for the production of security paper.
SU51562A1
(en )
1936-11-30
Hydrogen production process
SU52207A1
(en )
1936-11-30
The method of purification of oxygen from acetylene
SU51906A1
(en )
1937-11-30
The method of producing fluorosilicic acid
CH189156A
(en )
1937-05-01
Process for the production of security paper.
CH216172A
(en )
1941-08-15
Process for the production of carbon paper.
DK53957C
(en )
1937-11-29
Water softening plant.
CH195946A
(en )
1938-02-28
Plant for the production of carbonic acid.
ES125406A1
(en )
1932-02-16
Procedure for the production of amorphous carbon.
CH175924A
(en )
1935-03-31
Plant support.
CA360390A
(en )
1936-09-08
Carbon dioxide production
DK54628C
(en )
1938-04-19
Flowerpot.
ES140919A1
(en )
1936-04-01
Procedure for the production of fertilizers.
CH204847A
(en )
1939-05-31
Process for the production of a sulfur-containing condensation product.
ES140690A1
(en )
1936-03-01
An industrial process for the manufacture of blocks of solid carbon dioxide.
CH171247A
(en )
1934-08-31
Greenhouse plant.
DK53076C
(en )
1937-05-18
Dairy plant.
ES142238A1
(en )
1936-08-16
An improved procedure for the regular production of steels with specific characteristics.
ES131017A1
(en )
1933-08-01
An improved process for the production of solid carbon dioxide.
CA358951A
(en )
1936-07-07
Sulphur dioxide production
AT131856B
(en )
1933-02-25
Thread cutting stock for the production of tapered threads.
DK51588C
(en )
1936-05-04
Process for the Production of Dihydromorphinones.
DK45520C
(en )
1932-04-11
Plant holder.
ES144421A1
(en )
1939-11-01
Procedure for obtaining carbon sulphide.