CH213753A
(en )
1941-03-15
Process for producing positive blueprints.
CH218873A
(en )
1942-01-15
Process for the production of cylindrical rayon rolls.
CH220504A
(en )
1942-04-15
Mandrel for machines for the production of glued pipes from strip-shaped material.
CH223973A
(en )
1942-10-31
Developing solution for color developing a material for color photography.
CH219951A
(en )
1942-03-15
Process for the production of photographic material, in particular for color photographic images.
CH234229A
(en )
1944-09-15
High-voltage coils, in particular for transducers, and processes for their manufacture.
CH216434A
(en )
1941-08-31
Process for the production of halftone reflex copies.
CH209363A
(en )
1940-04-15
Photosensitive material for diazo printing and process for its manufacture.
CH219953A
(en )
1942-03-15
Process for making colored photographic material.
CH212210A
(en )
1940-11-15
Process for the production of printing forms and intermediate forms therefor.
CH226687A
(en )
1943-04-30
Process for the preparation of methyl isocyanate.
CH210352A
(en )
1940-07-15
Developer preparation for diazo prints and process for their production.
CH252075A
(en )
1947-11-30
Process for the manufacture of photographic material.
CH217514A
(en )
1941-10-31
A method for producing a photosensitive material and a photosensitive material produced by this method.
CH225364A
(en )
1943-01-31
Process for the preparation of a monoazo dye.
CH214621A
(en )
1941-05-15
Paper sizing agents and process for their manufacture.
CH219167A
(en )
1942-01-31
Process for the production of printing forms from colloids.
CH222268A
(en )
1942-07-15
Process for the production of printing plates for graphic purposes.
CH229362A
(en )
1943-10-15
Plastic material and process for its manufacture.
CH208006A
(en )
1939-12-31
Apparatus for making copies attached to business writing machines.
CH205919A
(en )
1939-07-15
Process for the production of matt photographic papers.
ES145016A1
(en )
1940-08-16
Fiberglass tapes and other substances, and a process and apparatus for its manufacture.
CH230279A
(en )
1943-12-31
Process for developing diazo blueprint material.
AT157957B
(en )
1940-02-26
Fiber casings and processes for their manufacture.
GR8327B
(en )
1939-07-06
METHOD FOR THE MANUFACTURE OF ARTIFICIAL HORN (GALALITHOS) FOR USE OF VARIOUS MATERIALS FOR THE PURPOSE OF REDUCING THE PRICE OF THE PRODUCT.