CH305860A
(en )
1955-03-15
Process for manufacturing semiconductor elements.
CH327712A
(en )
1958-02-15
Process for cleaning silicon
CH311250A
(en )
1955-11-30
Process for making diazotype copies.
CH310840A
(en )
1955-11-15
Process for the production of tinned copper wire.
CH306976A
(en )
1955-05-15
Process for the production of gel-like mixtures.
AT278221B
(en )
1970-01-26
Process for processing high quality oils
CH312180A
(en )
1955-12-31
Process for carrying out chlorination reactions.
CH300626A
(en )
1954-08-15
Process for producing blueprint material.
CH306041A
(en )
1955-03-31
Process for the separation of multi-substance mixtures.
CH307970A
(en )
1955-06-30
Process for the production of chlorofluoroethenes.
CH308182A
(en )
1955-06-30
Process for making shaped articles.
CH322056A
(en )
1957-05-31
Process for the reduction of 3-keto-steroids to 3a-oxy-steroids
AT181563B
(en )
1955-04-12
Process for drying loose material
CH307001A
(en )
1955-05-15
Process for the manufacture of explosives.
AT177885B
(en )
1954-03-10
Method for obtaining antibioticis
CH296662A
(en )
1954-02-28
Process for purifying acrylonitrile.
AT184594B
(en )
1956-02-10
Process for the reduction of ores
CH331865A
(en )
1958-08-15
Process for cleaning metallic objects
AT177357B
(en )
1954-01-25
Process for improving the surface of skiing areas
AT176982B
(en )
1953-12-10
Device for the mechanical determination of right-angled coordinates of terrain points
DE1635633U
(en )
1952-03-13
DEVICE FOR QUICK CHECKING OF TOTO RESULTS.
AT174204B
(en )
1953-03-10
Process for processing rubber compounds
AT175562B
(en )
1953-07-25
Process for making γ-rich hexachlorocyclohexane
AT176836B
(en )
1953-11-25
Process for the preparation of trichlorobenzenes from hexachlorocyclohexanes
AT175886B
(en )
1953-08-25
Process for the production of chlorinated benzenes