CH362061A
(en )
1962-05-31
Process for the production of pure boron nitride
CH342657A
(en )
1959-11-30
Method of manufacturing semiconductor elements
AT175782B
(en )
1953-08-10
Process for the production of semi-pulp
AT183517B
(en )
1955-10-25
Process for the production of steels containing lead
CH318203A
(en )
1956-12-31
Process for the galvanic deposition of metals
AT175270B
(en )
1953-06-25
Process for the production of high quality steels
CH300304A
(en )
1954-07-31
Process for the production of polyacrylonitrile threads.
AT187053B
(en )
1956-10-10
Process for the production of cation exchangers
FR1048132A
(en )
1953-12-21
Container over-capping process
AT179289B
(en )
1954-08-10
Process for the production of halofluoroethenes
AT179694B
(en )
1954-09-25
Process for the continuous regeneration of pickling liquors
AT172337B
(en )
1952-08-25
Process for the production of quinazoline compounds
CH260737A
(en )
1949-03-31
Process for making dentures.
CH322056A
(en )
1957-05-31
Process for the reduction of 3-keto-steroids to 3a-oxy-steroids
CH324699A
(en )
1957-10-15
Process for the production of printing plates
AT182111B
(en )
1955-05-25
Process for the rapid desulphurisation of steel melts
AT198034B
(en )
1958-06-10
Process for the production of polarizing films
AT181596B
(en )
1955-04-12
Process for the production of cellulose of great reactivity
AT189975B
(en )
1957-05-25
Process for the production of multi-layer skis
AT183428B
(en )
1955-10-10
Process for refining metals
AT180147B
(en )
1954-11-10
Process for purifying germanium
AT176828B
(en )
1953-11-25
Process for the production of carbides
AT175554B
(en )
1953-07-25
Process for the production of carbides
AT184594B
(en )
1956-02-10
Process for the reduction of ores
AT271368B
(en )
1969-05-27
Process for the production of nonwovens