CH301205A
(en )
1954-08-31
Method of manufacturing a germanium rectifier.
CH266274A
(en )
1950-01-15
Pest control methods.
CH272957A
(en )
1951-01-15
Method for generating a code signal.
CH272838A
(en )
1951-01-15
Process for producing a carbon-containing molding compound.
CH264515A
(en )
1949-10-31
Process for producing a powdery mixture.
CH245156A
(en )
1946-10-31
Method for producing a top layer on cement objects.
CH258014A
(en )
1948-11-15
Process for making artificial films.
AT187032B
(en )
1956-10-10
Process for the production of a profiled visible surface on concrete blocks
CH273002A
(en )
1951-01-31
Pest control methods.
CH262289A
(en )
1949-06-30
Process for the production of artificial structures.
CH253222A
(en )
1948-02-29
Process for producing a fuel.
CH301198A
(en )
1954-08-31
A method of forming a semiconductor device.
AT186197B
(en )
1956-07-10
Method for producing a retaining or retaining wall
CH277917A
(en )
1951-09-30
Method for producing a ceramic sintered body.
CH272285A
(en )
1950-12-15
Process for producing physically developed contrasts.
CH262189A
(en )
1949-06-30
Pest control methods.
CH278793A
(en )
1951-10-31
Method for the transmission of signals.
CH263994A
(en )
1949-09-30
Process for producing contrasting photographic materials.
AT162396B
(en )
1949-02-25
Process for making soymilk
CH262666A
(en )
1949-07-15
Process for the production of a discharge tube provided with a gas-binding layer.
CH267709A
(en )
1950-04-15
Process for producing color photographs.
AT177885B
(en )
1954-03-10
Method for obtaining antibioticis
CH260085A
(en )
1949-02-28
Procedure for making gluing.
CH312787A
(en )
1956-02-29
Process for the production of objects provided with a metal layer
CH293393A
(en )
1953-09-30
Process for generating gases.